To estimate a maximum purchase price for the coin in question, we can analyze the provided data, especially the previous auction prices and the current condition of the coin.

1. Current Condition: The coin has a condition of 30 (BC+), which indicates that it is not in the best shape. This may affect its value compared to coins in better condition.

2. Previous Auction Prices:
- In 2018, with a condition of 30, it was auctioned for 35 euros.
- In 2022, also with a condition of 75, it was auctioned for 62 euros.
- In 2019, with a condition of 75, it was auctioned for 55 euros.
- In 2024, with a condition of 30, it was auctioned for 100 euros, which is a notably high price, but it could be an exceptional case.

3. Average Auction Price: The average auction price of similar coins is 60.56 euros, which can serve as a reference.

4. Starting Price: The starting price is 25 euros, indicating that the seller expects a reasonable minimum price.

Given that the condition of the coin is 30, and considering the previous auction prices, an estimated maximum purchase price could be between 35 and 55 euros, taking into account that the highest auction price was 100 euros, but that could be an isolated case.

Therefore, a reasonable estimated maximum purchase price could be 50 euros. This is based on the analysis of previous auction prices and the current condition of the coin.

To estimate a maximum purchase price for the coin in question, we can consider several factors based on the provided data:

1. Starting Price: 30 euros, which is the initial price of the auction.
2. Condition: The coin has a condition rating of 70 (VF-), indicating that it is in fairly good shape, although not the best possible condition.
3. Auction History: The coin has been auctioned once before, with a hammer price of 190 euros. This suggests that there is significant interest in this coin, especially given its condition.
4. Average Starting and Hammer Prices: The average starting price is 52.5 euros, and the average hammer price is 190 euros. This indicates that, in general, coins of this reference tend to reach higher prices at auction.

Given that the coin has a condition rating of 70 and has previously reached a hammer price of 190 euros, it is reasonable to assume that interest in this coin will remain.

Taking all these factors into account, an estimated maximum purchase price could be in a range between the previous hammer price (190 euros) and a bit more, considering that the condition is good and there is an upcoming auction.

Therefore, an estimated maximum purchase price could be approximately 200-220 euros. This would allow for competitive bidding in the auction without exceeding a reasonable limit based on the price history.

To estimate a maximum purchase price for the coin in question, we will consider several factors:

1. Current Condition: The coin has a condition rating of 30 (BC+), indicating that it is not in the best condition, but it is also not among the worst.

2. Auction History:
- The average hammer price in previous auctions is 33.3 euros.
- The coin has been auctioned 33 times, of which it has sold 23 times, indicating a reasonable sell-through rate.
- Previous hammer prices for coins with similar conditions (around 30) have varied, but there are examples of auctions reaching up to 50 euros in more favorable conditions.

3. Starting Price and Estimates:
- The current starting price is 25 euros, which is a good starting point.
- The average starting price in previous auctions is 29.18 euros, suggesting that the market is willing to pay a bit more than the starting price.

4. Recent Trends: In the most recent auctions, hammer prices have ranged between 25 and 50 euros, depending on condition and demand.

Based on these factors, an estimated maximum purchase price could be around 40-45 euros. This is based on the historical hammer prices for coins of similar condition and market interest. However, given that the condition of this coin is 30, it is wise not to exceed 45 euros to avoid overpaying.

To estimate a maximum purchase price for the coin in question, we can consider several factors based on the provided data:

1. Current Condition: The coin has a condition rating of 75 (MBC), indicating that it is in quite good shape. This can positively influence its value.

2. Auction History:
- The average hammer price in previous auctions is 40.8 euros.
- The coin has been auctioned 11 times, of which it has sold 10 times, indicating good demand.
- Previous hammer prices for coins with similar conditions (75 and 80) have ranged between 30 and 95 euros.

3. Starting Price and Average Starting Price:
- The current starting price is 20 euros, which is relatively low compared to the average hammer price of 40.8 euros.
- The average starting price is 35.17 euros, suggesting that the current starting price could be a good buying opportunity.

4. Price Trends:
- In previous auctions, hammer prices have varied, but there are examples of sales reaching up to 95 euros in similar conditions.

Based on these factors, an estimated maximum purchase price could be between 60 and 80 euros, considering that the condition is good and that the price history shows that similar coins have reached higher prices in the past.

Therefore, a reasonable maximum purchase price could be 75 euros.

To estimate a maximum purchase price for the coin in question, we can analyze the provided data:

1. Current Condition: The coin has a condition of 75 (MBC), indicating that it is in fairly good shape, although not the best possible condition.

2. Auction History:
- The coin has been auctioned 24 times, of which it has sold 17 times.
- The average hammer price in previous auctions is 15.59 euros.
- The hammer prices in previous auctions for coins with similar conditions (75) have been 14 euros (2022) and 15 euros (2020).

3. Starting Prices and Estimates:
- The current starting price is 12 euros, which is slightly below the average starting price of 12.4 euros.
- The estimated prices in previous auctions for condition 75 have been 20 euros (2022) and 25 euros (2020).

4. Trends:
- The overall trend shows that hammer prices have been in a range of 14 to 15 euros for similar conditions in recent years.

Based on this data, an estimated maximum purchase price could be between 15 and 20 euros, considering that the average hammer price is 15.59 euros and that the estimated price in previous auctions has reached up to 20 euros.

Therefore, a reasonable maximum purchase price could be 20 euros.

To estimate a maximum purchase price for the coin in question, let's consider the following factors:

1. Starting price: 12 euros.
2. Condition: The coin has a condition rating of 25 (BC), indicating that it is not in very good shape.
3. Auction history: It has been auctioned once before, with a starting price of 12 euros and a hammer price of 12 euros, suggesting that there has not been significant interest above its starting price.
4. Average hammer price: The average hammer price is also 12 euros, reinforcing the idea that interest in this coin is limited.

Given that the condition is low and the auction history shows no price increase, the estimated maximum purchase price could be slightly above the starting price, but not much more, as interest appears to be low.

Therefore, an estimated maximum purchase price could be around 15 euros, considering there might be a slight increase in demand or interest in the current auction.

To estimate a maximum purchase price for the coin in question, we will consider several factors:

1. Current Condition: The coin has a condition rating of 75 (MBC), indicating that it is in quite good shape. This generally translates to a higher price compared to coins in lower condition.

2. Auction History:
- The coin has been auctioned 15 times, of which it has sold 6 times. This suggests that there is moderate interest in the coin.
- The average starting price in previous auctions is 32.81 euros, and the average hammer price is 36.33 euros. This provides context regarding the market value of the coin.

3. Previous Prices:
- In recent auctions, the starting price has been 60 euros with an estimated price of 90 euros, indicating expectations for the coin to reach a higher price.
- In the most recent auction (2023-02-16), the starting price was 60 euros and the estimated price was 90 euros, suggesting that the market is willing to pay more for coins in good condition.

4. Price Trends:
- Looking at previous hammer prices, the highest recorded price was 50 euros in a 2016 auction, but in more recent auctions, the estimated price has increased, which could indicate an upward trend.

Based on these factors, an estimated maximum purchase price could be in the range of 70 to 90 euros, considering that the condition is good and there is growing interest in the coin. A price of 80 euros could be a reasonable starting point for an offer, as it falls in the middle of this range and reflects both the condition and recent market trends.

To estimate a maximum purchase price for the coin in question, we can consider several factors:

1. Current Condition: The coin has a condition of 75 (MBC), which indicates that it is in quite good shape. This generally translates to a higher price compared to coins with lower conditions.

2. Auction History: By looking at previous hammer prices for coins with similar conditions (75 and 80), we can see that:
- In past auctions, hammer prices for coins with a condition of 75 have ranged between 25 and 80 euros.
- The average hammer price for coins with a condition of 75 seems to be around 40-60 euros.

3. Starting Price and Average Hammer Price: The current starting price is 25 euros, and the average hammer price in the past has been 43 euros. This suggests that the hammer price could be higher than the starting price.

4. Auction Trends: Given that the coin has been auctioned 18 times in the past and has had a good sales percentage (14 out of 18), this indicates a consistent interest in the coin, which may increase its value.

5. Estimation Based on Previous Prices: Considering that the highest hammer price for a coin with a condition of 75 was 80 euros, and that the average hammer price is 43 euros, we can estimate that a reasonable maximum purchase price could be in the range of 60-80 euros.

Conclusion: Based on all these factors, an estimated maximum purchase price for the coin in question could be approximately 70 euros. This sits at a midpoint between the average hammer price and the highest observed hammer price, taking into account the current condition of the coin.

To estimate a maximum purchase price for the coin in question, let's consider several factors:

1. Starting price: 25 euros.
2. Current condition: 30 (BC+), indicating a low condition.
3. Auction history: The coin has been auctioned 3 times and has sold on all occasions. The average hammer price has been 25 euros, suggesting that there has not been a significant increase in its value in the past.
4. Previous prices: In previous auctions, the starting price has varied, but the hammer price has consistently been low, especially for the current condition.

Given that the condition of the coin is low (30), and considering that the average hammer price has been 25 euros, it is reasonable to set a maximum purchase price that does not exceed the starting price, as demand and interest in coins in this condition tend to be limited.

Estimated maximum purchase price: 30 euros.

This price allows for a small margin over the starting price, but remains conservative given the sales history and the condition of the coin.

To estimate a maximum purchase price for the coin in question, we will consider several factors:

1. Current Condition: The coin has a condition rating of 25 (BC), indicating that it is not in very good shape. This generally reduces its value compared to coins in better condition.

2. Auction History:
- The coin has been auctioned 7 times, of which it has sold 6 times. This indicates good demand.
- Previous hammer prices varied, but there is a hammer price of 15 euros in 2019 and 30 euros in 2020 and 2023, suggesting that the price may fluctuate depending on the condition and demand at the time of the auction.

3. Starting Price and Average Hammer Price:
- The current starting price is 30 euros, which is higher than the average starting price of 23.63 euros. This may indicate that the auctioneer expects greater interest this time.
- The average hammer price is 28.33 euros, suggesting that, on average, similar coins have sold for a price close to this.

4. Comparison with Previous Prices:
- In previous auctions, the hammer price has ranged from 15 to 45 euros, depending on the condition of the coin.

Given that the current condition of the coin is 25 (BC), which is relatively low, and considering the price history, an estimated maximum purchase price could be around 25-30 euros. This is based on the fact that, although the starting price is 30 euros, the condition and price history suggest that achieving a higher hammer price may be difficult.

Therefore, a reasonable estimated maximum purchase price would be 25 euros.

To estimate a maximum purchase price for the coin in question, we can analyze the provided data:

1. Starting price: 50 euros.
2. Coin condition: 30 (BC+), indicating a low condition.
3. Auction history:
- In 2019, the coin with a condition of 30 was auctioned with a starting price of 60 euros and sold for 110 euros.
- In 2017, although the condition is not specified, the starting price was 75 euros and it sold for 80 euros.
- In 2024, again with a condition of 30, the starting price was 150 euros and it sold for 165 euros.

4. Average starting price: 83.75 euros.
5. Average selling price: 118.33 euros.

Given that the condition of the coin is 30 (BC+), and considering that in the past it has reached selling prices of up to 165 euros under similar conditions, we can make an estimation.

The current starting price is 50 euros, which is quite low compared to previous selling prices. However, since the condition is low, it is reasonable to adjust the maximum purchase price.

Estimation of the maximum purchase price:
- Based on the average selling price (118.33 euros) and considering the condition, a reasonable maximum purchase price could be in the range of 80 to 100 euros, given that the starting price is 50 euros and there is interest in the auction.

Therefore, an estimated maximum purchase price could be 100 euros.

Given that the coin has a condition of 30 (BC+), which indicates that it is in relatively low condition, and considering that there have been no previous auctions or sales of this reference, the estimated maximum purchase price could be slightly higher than the starting price, but not by much, as the lack of sales history may make buyers cautious.

Since the starting price is 30 euros and there is no historical data suggesting a significant increase in value, an estimated maximum purchase price could range between 30 and 50 euros, depending on collectors' interest in the auction. However, a more conservative price could be around 40 euros, considering the condition and the lack of history.

To estimate a maximum purchase price for the coin in question, we can analyze the provided data:

1. Starting price: 18 euros.
2. Coin condition: 30 (BC+), indicating a low condition.
3. Auction history: The coin has been auctioned 9 times, of which it has sold 8 times. This suggests there is a constant interest in the coin.
4. Average starting price: 29.22 euros.
5. Average hammer price: 40 euros.

### Analysis of previous prices:
- Previous hammer prices varied, but some approached 40 euros, which is the average hammer price.
- The current condition of the coin (30) is similar to the last auction in 2021, where the hammer price was 35 euros.

### Estimation:
Given that the condition is low and the starting price is 18 euros, but the average hammer price is 40 euros, we can consider that the hammer price could be in a range between 30 and 40 euros, depending on the interest of collectors in the auction.

Estimated maximum purchase price: It could be reasonable to set a maximum purchase price around 35-40 euros, given the sales history and interest in the coin. However, since the condition is only BC+, a more conservative price could be 30-35 euros.

Therefore, an estimated maximum purchase price could be 35 euros.

To estimate a maximum purchase price for the coin in question, we will consider several factors:

1. Current Condition: The coin has a condition of 30 (BC+), indicating that it is not in the best shape. This generally negatively affects the auction price.

2. Auction History:
- In 2019, a coin with the same condition (30) was auctioned with a final price of 280 euros, suggesting that there is a market willing to pay high prices for coins of this reference, even in less than optimal conditions.
- In 2020, the starting price was 90 euros, but it did not sell, indicating that interest may have fluctuated.
- In 2017, the final price was 120 euros, which is also relevant, although the condition of that coin is not specified.
- In 2014, the final price was 190 euros, showing that interest in this coin has varied over the years.

3. Starting Price and Average Final Price: The current starting price is 125 euros, and the average final price in previous auctions is 147.25 euros. This suggests that the final price could be in a similar range.

4. Market Trends: Since the coin has sold in all previous auctions and there have been no failed sale attempts, this indicates a consistent interest in the coin.

Based on these factors, an estimated maximum purchase price could be in the range of 150 to 200 euros, considering that the condition is not optimal but there is a history of high prices in previous auctions. A price of 180 euros could be a good benchmark for a competitive offer, given the auction history and interest in the coin.

To estimate a maximum purchase price for the coin in question, we can consider several factors based on the provided data:

1. Coin Condition: The coin has a condition rating of 70 (MBC-), indicating that it is in acceptable condition, but not among the best. This can influence the price, as coins in better condition typically fetch higher prices.

2. Auction History:
- The average starting price from previous auctions is 14.18 euros, and the average hammer price is 16.4 euros.
- In past auctions, hammer prices have varied, but there are examples where the coin has sold for 18 euros in similar conditions.

3. Price Trends:
- In previous auctions, estimated prices have ranged between 15 and 30 euros, depending on condition and other factors.
- The last auction had a starting price of 12 euros and an estimated price of 20 euros, suggesting there is interest in this coin.

4. Supply and Demand: Since it has been auctioned 10 times and sold 6 times, there is moderate interest in the coin, which can influence the price.

Based on these factors, an estimated maximum purchase price could be around 20-25 euros, considering that the average hammer price is 16.4 euros and that estimated prices in previous auctions have reached up to 30 euros.

Therefore, a reasonable maximum purchase price could be 25 euros.

To estimate a maximum purchase price for the coin in question, we will consider several factors:

1. Condition: The coin has a condition of 70 (MS-), which indicates that it is in quite good shape. This generally translates to a higher price compared to coins with lower conditions.

2. Auction history:
- The average hammer price for coins of similar condition (70) has been approximately 19.56 euros.
- In previous auctions, hammer prices for coins with a condition of 70 have ranged between 10 and 30 euros, with a most recent hammer price of 15 euros.

3. Starting price and previous prices:
- The current starting price is 12 euros, which is slightly lower than the average starting price of 13.82 euros.
- The estimated price for this auction is 20 euros, suggesting that there are expectations for the coin to sell at a higher price.

4. Sales trends: Of the 27 times it has been auctioned, it has sold 19 times, indicating good demand and consistent interest in this coin.

Taking all these factors into account, an estimated maximum purchase price could be around 25-30 euros, as this range aligns with previous hammer prices and the condition of the coin. However, it is important to consider that the final price may vary depending on competition in the auction and the interest of other bidders.

Based on the provided data, the coin in question has a conservation grade of 75 (MBC) and has had a consistent starting price of 25 euros in previous auctions, with a hammer price also of 25 euros. This indicates that, despite the estimated price being 40 euros, there has been no increase in the hammer price in past auctions.

Since the coin has been auctioned twice and has reached the same hammer price on both occasions, it is reasonable to assume that interest in this coin has not increased significantly. Furthermore, the fact that it will be auctioned again shortly suggests that the market has not changed drastically.

Therefore, a maximum estimated purchase price could be slightly higher than the previous hammer price, but not by much, given that interest seems to be stable. An estimated maximum purchase price could be around 30-35 euros, considering a small margin for competition in the auction.

To estimate a maximum purchase price for the coin in question, we can analyze the provided data, especially the current grade of the coin (70, MS-) and the previous auction prices of coins with similar grades.

1. Current Grade: The coin has a grade of 70 (MS-). This indicates that it is in an acceptable condition, but it is not of the highest quality.

2. Previous Auction Prices: By observing the auction prices of coins with similar grades (70 and 75), we can see that:
- In previous auctions, coins with a grade of 70 have had hammer prices ranging from 28 to 55 euros.
- Coins with a grade of 75 have had hammer prices ranging from 30 to 85 euros.

3. Average Hammer Price: The average hammer price for this coin is 58 euros, which is also a good indicator of market value.

4. Recent Trends: In the most recent auctions, hammer prices have shown a trend of being in the range of 50 to 100 euros for grades from 70 to 80.

5. Starting Price: The starting price is 18 euros, which suggests that there is considerable room for the hammer price to be higher.

Based on these points, an estimated maximum purchase price for the coin, considering its grade and previous auction prices, could be in the range of 70 to 85 euros. This aligns with the hammer prices of coins of similar grade and the observed average hammer price.

To estimate a maximum purchase price for the coin in question, we can analyze the provided data, especially considering the current condition of the coin (70, MBC-) and previous auction prices.

1. Condition: The coin has a condition of 70 (MBC-), indicating that it is in relatively good shape, although not of the highest quality (FDC).

2. Previous auction prices:
- In previous auctions, the coin has reached hammer prices that varied significantly. For example:
- In 2020, with a condition of 90, it sold for 220 euros.
- With a condition of 80, it sold for 30 euros.
- With a condition of 70, it sold for 18 euros.
- The average hammer price for coins in similar condition (70) has been approximately 18 euros.

3. Average starting and hammer price:
- The average starting price is 21.5 euros, and the average hammer price is 36.64 euros. This suggests that, in general, coins of this reference tend to sell for above their starting price.

4. Auction trends:
- The coin has been auctioned 13 times and has sold every time, indicating consistent demand.

Based on these factors, an estimated maximum purchase price for the coin in its current state (70, MBC-) could be in the range of 25 to 40 euros. This is based on the average hammer price of coins in similar condition and historical price behavior.

Therefore, a reasonable estimated maximum purchase price could be 35 euros.

Given that the coin has a grade of 75 (MBC) and has not been auctioned or sold in the past, the starting price is 75 euros.

However, since there are no historical sales data for this reference, it is difficult to establish a maximum estimated purchase price with precision.

In general, coins in MBC condition can reach prices that vary depending on demand and rarity. Since the starting price is 75 euros, a maximum estimated purchase price could be 20-30% higher than the starting price, especially if there is interest in the auction.

Therefore, a maximum estimated purchase price could be in the range of 90 to 100 euros.