To estimate a maximum purchase price for the coin in question, we can consider several factors based on the provided data:

1. Current Condition: The coin has a condition rating of 95 (EF+), indicating that it is in very good shape. This generally translates to a higher price compared to coins in lower condition.

2. Current Starting Price and Previous Prices: The current starting price is 175 euros. The average hammer price in previous auctions is 110.29 euros, but there have been auctions where it has sold for significantly higher prices, such as 220 euros in a previous auction.

3. Price Trends: Looking at previous hammer prices, there are several auctions where the coin has sold for over 150 euros, even reaching up to 220 euros. This suggests that there is considerable interest in this coin, especially in good condition.

4. Average Starting Price: The average starting price of 107.14 euros and the average hammer price of 110.29 euros indicate that, in general, coins of this reference tend to sell for above their starting price.

5. Sale Expectations: Given that it will be auctioned in the coming days and considering that the condition is high, it is reasonable to expect that the hammer price will be above the starting price.

Based on these factors, an estimated maximum purchase price could be between 200 and 250 euros, considering that the condition is high and there are precedents for sales at higher prices. A price of 220 euros could be a reasonable target, given that it has been a price reached in previous auctions.