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 95 (S/C-), indicating that it is in very good shape. This generally translates to a higher price compared to coins with lower conditions.

2. Auction History:
- The average hammer price for this coin in the past is 69.01 euros.
- Previous hammer prices for coins with a similar condition (95) have varied, but there are examples where they have sold for 90 euros or more, such as in the auction on 2020-12-17, where a coin with a condition of 100 was hammered at 90 euros.

3. Starting Price and Estimates:
- The current starting price is 60 euros, which is reasonable given the price history.
- The estimated price for this auction is 100 euros, suggesting that there are expectations for the coin to reach a higher price.

4. Sales Trends: The coin has been auctioned 94 times, with a high sales percentage (85 out of 94), indicating good demand.

Based on these factors, an estimated maximum purchase price could be between 90 and 110 euros, considering that the condition is high and there are precedents for sales in that range. Therefore, a reasonable maximum purchase price could be 100 euros.