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

1. Condition: The coin to be auctioned has a condition of 95 (EBC+), which indicates that it is in very 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 a similar condition (95), we can see that in previous auctions, the hammer prices have varied. For example:
- In the 2021 auction, a coin with a condition of 95 was sold for 950 euros.
- In the 2024 auction, another coin with a condition of 95 was sold for 1200 euros.

3. Average hammer price: The average hammer price of coins auctioned in the past is 787.5 euros, which can also serve as a reference.

4. Starting price: The starting price of the coin is 750 euros, indicating that the auctioneer expects considerable interest in the coin.

5. Sales trends: The coin has been auctioned 14 times, of which 12 have been sold, indicating good demand.

Based on these factors, and considering that the condition of the coin is high and that there have been recent sales at prices above 1000 euros for coins of similar condition, an estimated maximum purchase price could be between 1000 and 1200 euros.

Therefore, a reasonable maximum purchase price could be 1100 euros. This allows for a margin for competition in the auction, given the interest that a coin in such good condition may generate.