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 (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 coins with a similar condition (70) in the past has been 40.7 euros.
- In previous auctions, hammer prices for coins with a condition of 70 have varied, but there have been hammer prices of up to 60 euros in recent auctions.

3. Starting Price and Previous Prices:
- The current starting price is 12 euros, which is relatively low compared to previous hammer prices.
- The average starting price in the past has been 27.41 euros, suggesting that the current starting price could be a good buying opportunity.

4. Price Trends:
- In recent auctions, hammer prices have shown a trend of increasing, especially for coins in good condition.

Based on these factors, an estimated maximum purchase price for this coin could be between 50 and 60 euros, considering that the average hammer price for coins with similar conditions has been 40.7 euros and that there is potential for the hammer price to reach higher figures depending on demand and collector interest.

Therefore, a reasonable maximum purchase price could be 55 euros.

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

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

2. Auction History:
- The average hammer price for similar coins has been 46.07 euros.
- In previous auctions, hammer prices have varied, but there are examples of coins with similar conditions that have sold for prices ranging from 12 to 340 euros, depending on the condition and demand.

3. Starting Price and Estimates:
- The current starting price is 15 euros, and the average starting price in the past has been 21.6 euros.
- The estimated price for this auction is 25 euros, suggesting that there are expectations for the coin to sell for a reasonable price.

4. Sales Trends:
- Of the 20 times it has been auctioned in the past, it has sold 16 times, indicating a good sales rate.

Based on these factors, an estimated maximum purchase price could be around 40-50 euros, considering that the condition is good and that the average hammer price in the past has been 46.07 euros. This also takes into account the possibility that demand may vary in the current auction.

Therefore, a reasonable maximum purchase price could be 50 euros.

To estimate a maximum purchase price for the coin in question, we can 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 similar coins in condition 80 has been 50 euros in recent auctions.
- In the past, coins with a condition of 80 have sold for prices that varied, but the range seems to be between 25 and 50 euros, with some exceptional cases reaching up to 70 euros.

3. Starting Price and Average Hammer Price:
- The current starting price is 15 euros, which is relatively low compared to the average hammer price of 25.06 euros.
- This suggests that there is potential for the hammer price to be significantly higher.

4. Recent Trends: In the most recent auction, a coin with a condition of 85 sold for 50 euros, indicating that there is growing interest in coins of good condition.

Based on these factors, an estimated maximum purchase price for the coin in condition 80 could be between 40 and 60 euros, considering that the interest in coins of good condition may lead to a higher hammer price. Therefore, a reasonable maximum purchase price could be 50 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 of 70 (MS-), which indicates that it is in acceptable condition but not of high quality. This generally affects the price, as coins in better condition tend to fetch higher prices.

2. Auction History: By observing previous hammer prices of coins with a similar condition (70), we can see that the hammer price has varied. For example, in previous auctions, coins with a condition of 70 have reached hammer prices of 16, 15, 27, and 40 euros.

3. Average Hammer Price: The average hammer price for this coin is 92.21 euros, but this includes coins of different conditions. Given that the condition of this coin is 70, it is likely that the actual hammer price is below this average.

4. Starting Price and Previous Prices: The current starting price is 15 euros, and the average starting price in the past has been 63.1 euros. This suggests that the current starting price is relatively low compared to the historical average.

5. 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 40 euros, considering that the condition is not the best and that 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 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. Coins with a similar condition have had auction prices that vary, but are generally below the auction prices of coins in better condition.

2. Auction History:
- The average hammer price for similar coins in condition 70 has been approximately 20-40 euros in recent auctions.
- In the past, coins with condition 70 have reached hammer prices of up to 40 euros, as seen in the auction on 2020-10-20.

3. Starting Price and Average Hammer Price:
- The current starting price is 15 euros, which is reasonable given the history of starting and hammer prices.
- The average hammer price for similar coins is 109.69 euros, but this includes coins in better condition.

4. Recent Trends:
- In the most recent auctions, hammer prices for coins with similar condition have been in the range of 20-30 euros.

Based on these factors, an estimated maximum purchase price for the coin in condition 70 could be between 30 and 40 euros. This is because, although the average hammer price is higher, the condition and price history suggest that a more conservative range is more appropriate.

Maximum Purchase Estimate: 40 euros.

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

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

2. Auction History:
- The average hammer price for similar coins in the past has been 51.91 euros.
- In previous auctions, coins with a similar condition (around 70-80) have reached hammer prices ranging from 35 to 130 euros, depending on demand and other factors.

3. Starting Price and Estimates:
- The current starting price is 18 euros, which is relatively low compared to previous hammer prices.
- The average starting price of 31.92 euros also suggests that there is potential for an increase in the hammer price.

4. Recent Trends: In the most recent auctions, the hammer price has been in a range of 25 to 70 euros for similar conditions.

Based on this data, an estimated maximum purchase price could be in the range of 60 to 80 euros, considering that the coin is in good condition and that the hammer price history for similar coins suggests it could reach higher prices in a competitive auction.

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