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

1. Condition of the coin: The coin to be auctioned has a condition rating of 95 (EBC+), indicating that it is in very good condition. This generally translates to a higher price compared to coins with lower conditions.

2. Price history: By looking at the hammer prices of coins with similar conditions in the past, we can see that coins with conditions ranging from 85 to 95 have had hammer prices that vary significantly. For example:
- In recent auctions, coins with a condition of 85 have reached hammer prices of up to 240 euros.
- A coin with a condition of 95 sold for 750 euros in 2014.

3. Starting price and average hammer price: The current starting price is 200 euros, and the average hammer price in the past has been 82.29 euros. However, since the condition of this coin is significantly better than many that have been auctioned previously, it is reasonable to expect that the hammer price will be higher.

4. Market trends: Since the coin has been auctioned 77 times in the past and has had a sell-through rate of 92% (71 out of 77), this suggests that there is consistent interest in this coin, which may increase its value.

Based on these factors, an estimated maximum purchase price for this coin could be between 300 and 400 euros, considering its high condition and market interest. 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 to pay.