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.

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 30 (BC+), which indicates that it is not in very good shape. This generally negatively affects its value compared to coins in better condition.

2. Historical Auction Data: By observing the hammer prices of coins with similar conditions, we can see that the hammer prices for coins in higher condition grades (70 and 80) have reached prices between 20 and 55 euros. However, for coins in lower conditions, like the one we are evaluating, the hammer prices tend to be lower.

3. Average Hammer Price: The average hammer price for this coin in the past has been 153.86 euros, but this includes coins in better conditions. For a coin with a condition rating of 30, it is reasonable to expect a significantly lower hammer price.

4. Starting Price and Previous Prices: The current starting price is 12 euros, and in previous auctions, coins with similar conditions have had hammer prices ranging between 20 and 45 euros.

Taking all these factors into account, an estimated maximum purchase price for this coin, considering its condition and historical prices, could be in the range of 25 to 35 euros. This reflects a price that is reasonable given its state and the market context.

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

2. Historical Prices: By looking at the hammer prices of coins with a similar condition (70), we can see that they have varied. For example:
- In previous auctions, coins with a condition of 70 have had hammer prices ranging from 20 to 55 euros.
- The average hammer price for coins with a condition of 70 seems to be around 30-40 euros.

3. Starting Price and Average Hammer Price: The current starting price is 15 euros, and the average hammer price for this coin in the past has been 153.86 euros, but this includes coins in better condition.

4. Recent Trends: In the most recent auctions, hammer prices for coins with a condition of 70 have been in the range of 25 to 55 euros.

Based on this data, an estimated maximum purchase price for this coin, considering its condition and historical prices, could be in the range of 40 to 55 euros. This reflects a price that is reasonable given its state and market trends.

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

1. Coin Condition: The coin has a condition of 80 (MBC+), 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 auction prices of coins with a similar condition (80), we can see that they have reached auction prices that vary, but generally, auction prices for coins in MBC+ condition tend to be in a range of 40 to 110 euros, depending on demand and other factors.

3. Average Auction Price: The average auction price for this coin is 153.86 euros, suggesting that there is a higher selling potential, especially if demand is strong.

4. Auction Trends: The coin has been auctioned 101 times, with a high sales percentage (92 out of 101). This indicates a consistent interest in this coin, which can influence the price.

5. Starting Prices and Estimates: The starting price is 25 euros, and the average starting price is 62.11 euros. This suggests that the auction price could be significantly higher than the starting 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 auction prices, and the general auction trend. However, the final price will depend on the competition in the auction and the demand at that specific moment.

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 80 (MBC+), indicating that it is in relatively good shape. This generally translates to a higher price compared to coins with lower conditions.

2. Previous Auction Prices: By observing previous auction prices for coins with a similar condition (80), we can see that they have reached varying hammer prices. For example, in past auctions, coins with a condition of 80 have had hammer prices ranging from 25 to 220 euros.

3. Average Hammer Price: The average hammer price for this coin is 153.86 euros, providing a good reference for the expected value.

4. Average Starting Price: The average starting price is 62.11 euros, indicating that auctioneers are willing to start bids at a lower price, but this does not necessarily reflect the true value of the coin.

5. Auction Trends: The coin has been auctioned 101 times, with a high sales percentage (92 out of 101). This suggests that there is consistent interest in this coin, which may increase its value.

6. Estimated Prices: In previous auctions, estimated prices for coins with a condition of 80 have been up to 50 euros, which may indicate that buyers are willing to pay more for coins in good condition.

Based on these factors, an estimated maximum purchase price for the coin in question could be in the range of 150 to 200 euros. This is based on the average hammer price and the condition of the coin, as well as the trends observed in previous auctions.

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 30 (BC+). This is relatively low compared to other coins that have been auctioned, which may affect its value.

2. Previous Auction Prices: By observing the previous auction prices of coins with similar conditions, we can see that prices vary. For example, coins with conditions ranging from 25 to 30 have had auction prices ranging from 12 to 54 euros.

3. Average Auction Price: The average auction price for this coin is 116.27 euros, but this includes coins in better condition. Given that the condition of this coin is lower, it is likely that the auction price will be below this average.

4. Starting Prices and Estimates: The current starting price is 15 euros, and the average starting price in previous auctions is 80.21 euros. However, since the condition is low, it is unlikely to reach the average starting price.

5. Auction Trends: The coin has been auctioned 81 times, with an 81.5% sell-through rate. This indicates that there is considerable interest in the coin, but the auction price may be influenced by its condition.

### Estimated Maximum Purchase Price
Taking all these factors into account, an estimated maximum purchase price for this coin could be between 25 and 40 euros. This is based on the fact that, although the condition is low, there is interest in the coin and the starting price is relatively low.

Therefore, a reasonable maximum purchase price could be 35 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 of 70 (MBC-). This indicates that it is in an acceptable state, but not of high quality. In comparison to other auctioned coins, those with a higher condition tend to reach higher prices.

2. Previous Prices: By observing the hammer prices of coins with similar conditions (around 70), we can see that the hammer prices have varied. For example, in previous auctions, coins with a condition of 70 have reached hammer prices ranging from 16 to 76 euros.

3. Average Hammer Price: The average hammer price for this coin is 116.27 euros, but this may be influenced by coins in better condition.

4. Starting Price and Estimates: The starting price is 15 euros, and the average starting price is 80.21 euros. This suggests that there is potential for an increase in the hammer price.

5. Auction Trends: Since it has been auctioned 81 times and sold 66 times, there is good demand for this coin, which may increase its price.

Based on these factors, an estimated maximum purchase price could be in the range of 50 to 80 euros, considering that the condition is 70 and that the hammer price may vary depending on competition in the auction. However, given the price history and demand, a reasonable maximum purchase price could be approximately 70 euros.

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 80 (MBC+). This is an important factor, as coins in better condition tend to reach higher prices.

2. Previous Auction Prices: By observing previous auction prices for coins with a similar condition (around 80), we can see that they have reached auction prices that vary, but some examples are:
- 54 (2020-10-20, condition 80)
- 76 (2020-07-08, condition 85)
- 121 (2021-06-22, condition 90)
- 110 (2023-03-22, condition 90)

3. Average Auction Price: The average auction price for this coin is 116.27 euros, indicating that, in general, coins of this reference tend to sell for over 100 euros.

4. Recent Trends: In the most recent auctions, the auction prices have shown a range that may indicate an increase in interest or value for the coin.

5. Starting Price: The starting price is 18 euros, which is quite low compared to previous auction prices.

Based on these factors, an estimated maximum purchase price for this coin, considering its condition and previous auction prices, could be in the range of 120 to 150 euros. This is based on the auction price trends for coins of similar condition and the general interest in 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 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 73.76 euros.
- Previous auctions of coins with similar conditions (around 30) have had hammer prices that varied, but are generally lower than the overall average.

3. Recent Starting and Hammer Prices:
- In recent auctions, the hammer prices for coins with similar conditions have ranged from 20 to 30 euros, with some cases reaching up to 36 euros.

4. Market Trends: Since the coin has been auctioned 111 times and has had a high sales percentage (104 out of 111), this suggests there is consistent interest in this coin, which may influence its price.

5. Starting Price: The starting price is 12 euros, indicating that the seller has moderate expectations.

Based on these factors, an estimated maximum purchase price for this coin, considering its condition and price history, could be between 25 and 35 euros. This reflects a balance between market interest 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 of 75 (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: By observing previous hammer prices for coins with similar conditions (75-80), we can see that the hammer prices have varied. For example:
- In recent auctions, coins with a condition of 80 have reached hammer prices of up to 160 euros.
- Coins with a condition of 75 have had hammer prices ranging between 30 and 70 euros.

3. Average Hammer Price: The average hammer price for this coin is 73.76 euros, which provides a good reference point.

4. Recent Trends: In the most recent auctions, the hammer price has shown a trend of increasing, especially for coins in good condition.

5. Starting Price and Average Starting Price: The starting price is 25 euros, and the average starting price is 40.68 euros. This suggests that the hammer price could be significantly higher than the starting price.

Based on these factors, an estimated maximum purchase price for the coin in question could be between 80 and 120 euros, considering that the condition is good and there is an upward trend in hammer prices for similar coins.

Therefore, a reasonable maximum purchase price could be 100 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 30 (BC+). This indicates that it is not in the best condition, which will affect its value.

2. Auction History:
- The average hammer price for similar coins in the past has been 86.58 euros.
- The condition of the coins auctioned in the past varied, but there are examples of coins with similar conditions that have sold for prices ranging from 9 to 40 euros, depending on the condition and demand.

3. Previous Hammer Prices:
- In previous auctions, coins with condition ratings of 30 have had hammer prices ranging from 9 to 40 euros.
- The most recent auction of a coin with a similar condition had a hammer price of 30 euros.

4. Market Trends: Given that the coin has been auctioned 91 times and has had a high sales percentage (82 out of 91), this suggests that there is a consistent interest in this coin.

Based on these factors, an estimated maximum purchase price for this coin could be in the range of 30 to 40 euros. This is based on the historical hammer prices for coins with a similar condition and the general interest in the coin. However, since the condition is not high, it is wise not to exceed 40 euros in the bid.