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

1. Coin Condition: The coin to be auctioned has a condition rating of 95 (EBC+), indicating that it is in very good condition. This generally increases its value compared to coins with lower conditions.

2. Auction History:
- The average hammer price for this coin in the past has been 21.71 euros.
- In previous auctions, hammer prices have varied significantly, with some reaching up to 65 euros for a condition rating of 100.
- The last auction with a similar condition (95) had a hammer price of 15 euros.

3. Starting Price and Estimates:
- The current starting price is 10 euros, and the average starting price in the past has been 11.06 euros.
- The estimated price for this auction is 15 euros, suggesting that bidders may be willing to pay more.

4. Sales Trends: The coin has been sold in 31 out of the last 34 auctions, indicating good demand.

Based on these factors, an estimated maximum purchase price could be in the range of 25 to 30 euros, considering that the condition is high and that the price history shows that coins in similar conditions have reached higher prices in the past.

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

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 95 (EBC+), indicating that it is in very good shape. This generally translates to a higher price compared to coins in lower condition.

2. Auction History:
- The average hammer price for this coin is 21.71 euros.
- In previous auctions, we have seen hammer prices that vary, but there are examples of sales reaching up to 65 euros (as seen in the auction on January 31, 2023).

3. Starting Price and Estimates:
- The current starting price is 15 euros, which is slightly higher than the average starting price of 11.06 euros.
- The estimated price for this auction is 30 euros, suggesting expectations for the coin to sell at a higher price.

4. Price Trends:
- In recent auctions, hammer prices have shown an increase, especially for coins in good condition.

Taking all these factors into account, an estimated maximum purchase price could be in the range of 30 to 65 euros, considering that the highest recorded hammer price was 65 euros and the estimated price for this auction is 30 euros.

Therefore, a reasonable maximum purchase price could be between 30 and 40 euros. This allows for some margin for competition in the auction, given that the coin's condition is high and there is interest in it.

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 (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:
- The average hammer price for similar coins in condition (75) has been 20 euros in previous auctions.
- In past auctions, the highest hammer price for a coin with a condition of 75 was 35 euros (in 2016).
- The price trend shows that as the condition improves, the hammer price also tends to increase.

3. Starting Price and Average Hammer Price:
- The current starting price is 15 euros, and the average hammer price in the past has been 17.83 euros. This suggests that the hammer price could be in a similar or slightly higher range.

4. Recent Trends: In the most recent auctions, the hammer price has been around 20-33 euros for coins of similar condition.

Based on these factors, an estimated maximum purchase price for the coin could be between 25 and 35 euros, considering that the condition is good and that the price history supports this estimate. 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. Current Condition: The coin has a condition of 75 (MBC), which indicates that it is in fairly good shape, but not among the best qualities (FDC).

2. Historical Prices: By looking at the auction prices of coins with similar conditions (around 75-90), we can see that the auction prices have varied. For example:
- In previous auctions, coins with a condition of 85 have reached auction prices of up to 220 euros.
- Coins with a condition of 90 have reached auction prices of up to 300 euros.

3. Average Auction Price: The average auction price for this particular coin is 95.48 euros, which gives us a good reference.

4. Starting Price and Estimates: The current starting price is 15 euros, and the average starting price in the past has been 72.14 euros. This suggests that interest in the coin may be greater than the starting price.

5. Recent Trends: In the most recent auctions, the auction prices have shown a range that may indicate an increase in interest for coins of this condition.

Based on these factors, an estimated maximum purchase price for this coin could be in the range of 120 to 180 euros, considering that the condition is good and there is a price history that supports this estimate.

Therefore, a reasonable maximum purchase price could be 150 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 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:
- The average hammer price for similar coins has been approximately 34.94 euros.
- In previous auctions, coins with a similar condition (75) have reached hammer prices that vary, but some examples are:
- 2021-03-18: 150 euros (condition 95)
- 2022-02-22: 35 euros (condition 75)
- 2022-04-27: 31 euros (condition 80)
- The trend shows that coins in MBC condition (75) can reach hammer prices in the range of 30 to 40 euros.

3. Starting Price and Average Starting Price:
- The starting price is 15 euros, and the average starting price is 30.24 euros. This suggests that there is considerable room for the hammer price to be higher.

4. Demand and Supply: The coin has been auctioned 45 times in the past, with a sell-through rate of 80%. This indicates that there is consistent interest in this coin, which may drive up its price at auction.

Based on these factors, an estimated maximum purchase price for the coin could be between 40 and 50 euros, considering that the condition is good and that interest in the coin is high. However, given the hammer price history, a more conservative price could be around 35-40 euros.

Therefore, a reasonable estimated maximum purchase price would be 45 euros.

To estimate a maximum purchase price for the coin with a grade of 80 (MBC+), we can analyze historical data from previous auctions of coins with similar grades and their hammer prices.

1. Hammer Price Analysis:
- In previous auctions, coins with grades close to 80 have had varying hammer prices. For example:
- A coin with a grade of 80 was sold for 19 euros.
- Another with a grade of 85 was sold for 20 euros.
- Coins with a grade of 90 have reached hammer prices of up to 35 euros.

2. Price Trends:
- The average hammer price for coins of similar grade (MBC+) seems to be in the range of 15 to 25 euros, with some exceptional cases reaching up to 35 euros.

3. Additional Considerations:
- The starting price of 15 euros suggests that the auction house expects moderate interest in the coin.
- Given that there are 3 similar coins that will be auctioned in the coming days, this could influence competition and, therefore, the final price.

Estimation of Maximum Purchase Price:
Based on the previous analysis, a reasonable maximum purchase price for this coin, considering its grade and historical hammer prices, could be between 25 and 30 euros. This allows for a margin for competition in the auction and the interest of other collectors.