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 30 (BC+), which indicates that it is not in the best condition. This generally reduces its value compared to coins in better condition.

2. Historical Prices: By looking at the auction prices of coins with similar conditions, we can see that the auction prices for coins with a condition of 30 have varied, but they are generally found in a lower range than coins in better condition.

3. Starting Price and Average Hammer Price: The current starting price is 12 euros, and the average hammer price for this coin in the past has been 128.83 euros. However, given that the condition is low, it is unlikely to reach that average price.

4. Recent Trends: In recent auctions, the hammer prices for coins with similar conditions have been in a range of 15 to 36 euros.

Based on these factors, an estimated maximum purchase price for this coin, considering its condition and historical prices, could be between 20 and 30 euros. This reflects a balance between the value of the coin in its current state and the interest of collectors.

To estimate a maximum purchase price for the coin with a grade of 70 (MS-), we can analyze historical data from previous auctions of coins with a similar grade and their hammer prices.

1. Historical Price Analysis:
- In the past, coins with a grade of 70 have had hammer prices that varied. For example:
- In a 2020 auction, a coin with a grade of 70 had a hammer price of 25 euros.
- In another 2020 auction, the hammer price was 31 euros.
- In 2021, the hammer price was 50 euros.
- In 2022, the hammer price was 70 euros.

2. Price Trends:
- Observing the hammer prices, it seems that coins with a grade of 70 tend to sell between 25 and 70 euros, with some peaks in specific auctions.

3. Starting Price and Average Price:
- The current starting price is 15 euros, and the average hammer price in the past has been 128.83 euros, but this includes coins of better grades.

4. Estimation:
- Given that the coin's grade is 70 (MS-), a reasonable hammer price could be in the range of 30 to 70 euros, based on previous auctions.

Conclusion:
An estimated maximum purchase price for this coin, considering its grade and historical prices, could be approximately 60 euros. This is based on the price trend for coins with a similar grade and the current market context.

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

1. Coin Condition: The coin has a condition rating of 80 (MBC+), indicating that it is in relatively good shape. This suggests that its value should be above that of coins in worse condition.

2. Previous Auction Prices: By observing the hammer prices of coins with a similar condition (80), we can see that they have reached hammer prices that vary, but generally, the hammer prices for coins in similar conditions have been in the range of 25 to 170 euros, depending on demand and other factors.

3. Average Hammer Price: The average hammer price for this coin is 128.83 euros, which provides a good reference for the expected value.

4. Starting Price and Recent Auction Prices: The current starting price is 30 euros, which is quite low compared to the average hammer price. This suggests that there is potential for the hammer price to be significantly higher.

5. Auction Trends: Since it has been auctioned 266 times and sold 230 times, there is good demand for this coin, which may increase its price at auction.

Based on these factors, an estimated maximum purchase price for this coin could be in the range of 150 to 200 euros, considering that the average hammer price is 128.83 euros and that the condition is good. This also takes into account the possibility that demand in the current auction may be high, which could push the price towards the upper end of this range.

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+). This indicates that it is not in the best condition, which generally affects its value.

2. Auction History:
- The average hammer price for similar coins in the past has been 98.02 euros.
- Previous auctions of coins with a similar condition (30) have had hammer prices that vary, but are generally in the range of 15 to 40 euros.

3. Starting Prices and Estimates:
- The current starting price is 12 euros, which is relatively low.
- The average starting price for similar coins is 61.47 euros, suggesting there is potential for an increase in the hammer price.

4. Recent Trends: In the most recent auctions, hammer prices for coins with similar conditions have been in the range of 25 to 40 euros.

Based on these factors, an estimated maximum purchase price for this coin could be between 30 and 50 euros. This is because, although the condition is not high, the price history and recent auction trends suggest that there could be enough interest to reach that range.

Therefore, a reasonable maximum purchase price could be 40 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+), which indicates that it is not in the best condition. This generally reduces its value compared to coins in better condition.

2. Historical Prices: By looking at previous auction prices for coins with a similar condition (30), we can see that the hammer prices have varied. For example, in previous auctions, the hammer prices for coins with a condition of 30 have ranged from 15 to 40 euros.

3. Average Hammer Price: The average hammer price for this coin is 98.02 euros, but this includes coins in better condition. Given that the condition of the coin in question is quite low, it is unlikely to reach that price.

4. Starting Price and Average Starting Price: The starting price is 15 euros, and the average starting price is 61.47 euros. This suggests that interest in the coin may be moderate, especially considering its condition.

5. Recent Trends: In the most recent auctions, the hammer prices for coins with similar conditions have been in the range of 20 to 35 euros.

Based on these factors, an estimated maximum purchase price for this coin could be between 25 and 35 euros. This reflects a balance between the current condition and historical prices, as well as market interest.

Therefore, a reasonable maximum purchase price could be 30 euros.

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

1. Coin Condition: The coin has a condition rating of 75 (MBC), which indicates that it is in fairly good shape, but not among the highest qualities (FDC).

2. Historical Auction Data:
- The average hammer price for similar coins has been 98.02 euros.
- In previous auctions, coins with a similar condition (75) have reached hammer prices that varied, but some examples are:
- 25 euros (hammer price) in 2018.
- 40 euros (hammer price) in 2023.
- 35 euros (hammer price) in 2023.

3. Starting Price and Estimated Prices:
- The current starting price is 25 euros, and the average starting price for similar coins is 61.47 euros.

4. Sales Trends: The coin has been auctioned 147 times, of which it has sold 137 times, indicating good demand.

Based on this data, an estimated maximum purchase price could be in the range of 70 to 90 euros, considering that the average hammer price is 98.02 euros, but adjusting for the condition and previous hammer prices.

Therefore, a reasonable maximum purchase price could be 85 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 25 (BC), which indicates that it is not in very good shape. This generally reduces its value compared to coins in better condition.

2. Historical Prices: By looking at the auction prices of coins with similar conditions, we can see that the auction price for coins with a condition of 25 (BC) has been relatively low. For example, in previous auctions, the hammer prices for coins in similar conditions have ranged from 12 to 30 euros.

3. Starting Price and Average Hammer Price: The current starting price is 12 euros, and the average hammer price for similar coins is 80.88 euros. However, given that the condition of this coin is low, it is unlikely to reach the average hammer price.

4. Sales Trends: The coin has been auctioned 112 times, of which it has sold 97 times, indicating a good sales rate. However, the fact that there are 15 occasions where it did not sell suggests that there may be a limit to what buyers are willing to pay.

5. Previous Estimates: In previous auctions, the estimated price for coins with a similar condition has been around 15 to 25 euros.

Based on these factors, an estimated maximum purchase price for this coin could be between 20 and 30 euros. This reflects a balance between the current condition and the historical hammer prices for coins in similar conditions.

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 of 70 (MS-). This indicates that it is in an acceptable state, but not of high quality.

2. Historical Prices: Looking at previous auction prices for coins with a similar condition (70), we find that:
- In several auctions, the hammer prices for coins with a condition of 70 have ranged between 15 and 30 euros.
- In previous auctions, the highest hammer price for a coin with a condition of 70 was 30 euros.

3. Average Hammer Price: The average hammer price for this coin is 80.88 euros, but this may be influenced by coins in better condition.

4. Starting Price: The current starting price is 18 euros, which suggests that the seller expects a lower price initially.

5. Auction Trends: Given that it has been auctioned 112 times and sold 97 times, there is good demand for this coin, which may increase its value.

Based on these factors, an estimated maximum purchase price for the coin with a condition of 70 could be between 30 and 40 euros, considering that it is a reasonable price given its state and historical prices. However, if there is strong competition in the auction, the price could exceed 40 euros.

Therefore, a reasonable maximum purchase price could be 40 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 rating of 80 (MS+), indicating 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 this coin is 110.19 euros.
- In the past, hammer prices have varied significantly, ranging from 20 euros to 1100 euros, depending on the condition and demand at the time of the auction.
- Coins with similar conditions (around 80) have had hammer prices ranging from 50 to 90 euros on several occasions.

3. Starting Price and Average Starting Price:
- The current starting price is 30 euros, which is relatively low compared to the average hammer price.
- The average starting price is 48.81 euros, suggesting that the market is willing to pay more than the starting price.

4. Recent Trends:
- In the most recent auctions, hammer prices have been in the range of 60 to 80 euros for coins of similar condition.

Based on these factors, an estimated maximum purchase price for this coin could be between 80 and 120 euros, considering that the condition is good and the auction history shows significant interest in coins of this quality.

Therefore, a reasonable maximum purchase price could be 100 euros.

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

1. Coin Condition: The coin has a condition rating of 85 (ebc-), which indicates that it is in quite good shape. This generally translates to a higher price compared to coins with lower conditions.

2. Previous Auction Prices: By observing the hammer prices of coins with similar conditions (around 85-90), we can see that the hammer prices have varied. For example, in previous auctions, coins with a condition of 90 have reached hammer prices of up to 270 euros, while others with a condition of 80 have had lower hammer prices, around 15-70 euros.

3. Average Hammer Price: The average hammer price for this particular coin is 100.2 euros, which gives us a good reference point.

4. Starting Price and Estimates: The current starting price is 25 euros, and the average starting price in the past has been 61.42 euros. This suggests that interest in the coin may be higher, especially if the condition is good.

5. Auction Trends: Given that it has been auctioned 65 times and sold 58 times, this indicates a consistent interest in the coin, which may influence the price.

Taking all these factors into account, an estimated maximum purchase price for this coin could be in the range of 150 to 200 euros. This is based on the condition, previous hammer prices, and general interest in the coin. However, it is important to remember that the final price may vary depending on competition in the auction and other market factors at the time of sale.

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 30 (BC+), which indicates that it is not in the best condition. This will affect its value compared to coins in better condition.

2. Historical Prices: By looking at the auction prices of similar coins in the past, we can see that prices vary significantly depending on the condition. For example, coins with higher grades (such as 70, 80, 90, 95) have reached auction prices ranging from 8 euros to 190 euros.

3. Average Auction Price: The average auction price for this coin is 54.06 euros, which gives us an idea of what buyers are willing to pay on average.

4. Starting Price and Average Starting Price: The current starting price is 18 euros, and the average starting price is 34.08 euros. This suggests that the starting price is relatively low compared to the average auction price.

5. Sales Trends: The coin has been auctioned 38 times, of which it has sold 32 times. This indicates a consistent interest in the coin, which may influence its price.

Given all this, and considering that the coin's condition is 30 (BC+), an estimated maximum purchase price could be in the range of 30 to 50 euros. This is based on the fact that, although the condition is not high, the interest in the coin and historical prices suggest it could reach a reasonable price at auction.

Therefore, an estimated maximum purchase price could be 40 euros.

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

1. Current Condition: The coin is in a condition of 90 (EBC), which indicates that it is in good shape. This generally increases its value compared to coins in lower conditions.

2. Auction History:
- The average hammer price for similar coins in the past has been 43.53 euros.
- In previous auctions, coins with a condition of 90 have reached hammer prices of up to 120 euros (as seen in the auction on 2021-10-20).

3. Starting Price and Estimates:
- The current starting price is 30 euros, which is reasonable given the history of starting and hammer prices.
- The estimated price for this auction is 70 euros, suggesting that bidders expect the coin to reach a higher price.

4. Sales Trends: Out of the 26 times it has been auctioned, 20 have resulted in sales, indicating good demand.

Based on these factors, an estimated maximum purchase price could be between 80 and 100 euros, considering that the condition is good and there is a history of hammer prices that supports this estimate. However, since the starting price is 30 euros, it is likely that bidders could acquire it for a price below this range, depending on the competition in the auction.

Therefore, a reasonable maximum purchase price could be 90 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 70 (MS-), which is a fairly good state, but not the best. This suggests that its value will not reach the highest prices seen for coins in better condition.

2. Auction History:
- The average hammer price for coins in similar condition (70) has been approximately 100-130 euros in previous auctions.
- In past auctions, hammer prices for coins with a condition of 70 have varied, but the range seems to be between 70 and 100 euros, with some exceptional cases reaching up to 150 euros.

3. Starting Price and Average Hammer Price:
- The current starting price is 40 euros, which is relatively low compared to the average hammer price of 328.83 euros for all auctions of this coin. However, the average starting price of 130.95 euros suggests that there is potential for an increase in the hammer price.

4. Recent Trends:
- In the most recent auctions, there has been an increase in hammer prices, which could indicate a rising trend in interest for this coin.

5. Competition in the Auction:
- Given that there are 3 similar coins that will be auctioned in the coming days, this could affect demand and the final price.

Based on these factors, an estimated maximum purchase price for this coin could be between 100 and 150 euros. This reflects both the historical hammer prices for coins in similar condition and the current trend in the market.

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 70 (VF-). This indicates that it is in an acceptable state, but not of high quality. Coins in superior conditions (for example, 80 or higher) tend to reach higher prices.

2. Auction History:
- The average hammer price for similar coins in the past is 195.83 euros.
- The coin has been auctioned 80 times, of which it has sold 68 times, indicating good demand.
- Previous hammer prices for coins with a similar condition (70) have varied, but there are examples of auctions in the range of 30 to 55 euros.

3. Starting Price and Average Starting Price:
- The current starting price is 25 euros, which is relatively low compared to the average starting price of 105.28 euros for similar coins.

4. Recent Trends: In the most recent auctions, hammer prices for coins with similar conditions have been in the range of 30 to 90 euros.

Based on these factors, an estimated maximum purchase price for this coin could be in the range of 70 to 90 euros, considering that the condition is a limiting factor and that the starting price is relatively low. This also takes into account the possibility that other bidders may be interested in the coin, which could drive up the price at auction.

To estimate a maximum purchase price for the coin with a grade of 30 (BC+), we can analyze historical data and price trends.

1. Data from previous auctions:
- The coin has been auctioned 101 times, of which it has sold 92 times.
- The average hammer price is 153.86 euros, but this value includes coins in better conditions.
- In previous auctions, hammer prices for coins in similar conditions (BC+) have varied, but they generally fall within a lower range.

2. Hammer prices for similar grades:
- In past auctions, hammer prices for coins with a grade of 30 (BC+) have been lower. For example, in a recent auction, a coin with a grade of 30 sold for 45 euros.
- Hammer prices for coins in grades of 70 and 80 have been significantly higher, indicating that the grade drastically affects the price.

3. Estimation based on starting price and average hammer price:
- The current starting price is 12 euros, suggesting that the seller expects moderate interest.
- Given that the average hammer price for coins in similar conditions has been approximately 20-45 euros, we can estimate that the maximum purchase price for this coin could be in the range of 30 to 50 euros.

Conclusion: Based on the grade of 30 (BC+) and historical data, an estimated maximum purchase price for this coin could be 45 euros.