To estimate a maximum purchase price for the coin in question, we can analyze the provided data, especially the current condition of the coin (95, EBC+) and the hammer prices from previous auctions.

1. Condition: The coin has a condition of 95, indicating that it is in very good shape. This generally translates to a higher price compared to coins with lower conditions.

2. Previous hammer prices:
- In previous auctions, we have seen hammer prices of 1600 (with condition 95), 1100 (with condition 95), and other lower prices for lesser conditions.
- The average hammer price for coins of similar condition (95) seems to be in the range of 950 to 1600 euros.

3. Starting price and estimates:
- The current starting price is 1000 euros, which is reasonable given the price history.
- The average hammer price in the past has been 785.71 euros, but this may be influenced by coins of lower condition.

4. Auction trends:
- Since the coin has sold on all previous occasions and considering that there are two auctions scheduled in the future, this may increase competition and, therefore, the price.

Based on these factors, an estimated maximum purchase price could be in the range of 1500 to 1800 euros, considering the good condition and the history of hammer prices. This would allow a competitive buyer to secure the coin without exceeding a reasonable limit based on the market.