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

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

2. Previous Prices: By observing previous auction prices for coins with similar conditions (95 and 90), we can see that auction prices have varied but have reached significant figures. For example, in recent auctions, coins with a condition of 95 have reached hammer prices of up to 440 euros.

3. Starting Price and Average Hammer Price: The current starting price is 375 euros, and the average hammer price in the past has been 284.7 euros. However, given that the condition of this coin is high, it is reasonable to expect that the hammer price will be above the average.

4. Recent Trends: In the most recent auctions, hammer prices for coins of similar condition have been in the range of 360 to 440 euros.

Based on these factors, an estimated maximum purchase price for this coin could be in the range of 400 to 450 euros. This reflects both the high condition of the coin and the price trends in recent auctions.