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 condition. 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 similar conditions (95 and 90), we can see that the hammer prices have varied considerably. For example, in previous auctions, coins with a condition of 95 have reached hammer prices of up to 380 euros.

3. Starting Price and Average Prices: The current starting price is 110 euros, and the average hammer price in the past has been 51.7 euros. However, given that the condition of this coin is high, it is reasonable to expect that the hammer price will be significantly higher than the average.

4. Recent Trends: In the most recent auctions, hammer prices for high-condition coins have shown an increase, suggesting that there is growing demand.

Based on these factors, an estimated maximum purchase price for this coin could be in the range of 150 to 200 euros. This is based on the high condition and the hammer prices of similar coins in the past. However, it is important to keep in mind that the final price will depend on the competition in the auction and the willingness of other bidders.