To estimate a maximum purchase price for the coin in question, let’s consider the following factors:

1. Starting price: 35,000 euros.
2. Average hammer price in the past: 44,000 euros.
3. Condition of the coin: 95 (EF+), indicating good preservation.
4. Auction history: It has been auctioned once before, with a hammer price of 44,000 euros, which matches the estimated price in that auction.

Given that the coin is in good condition and has reached a hammer price of 44,000 euros in the past, it is reasonable to consider that interest in this coin could remain stable or even increase, especially if there is more demand in the current auction.

Taking these factors into account, an estimated maximum purchase price could be around 45,000 to 50,000 euros, considering that the previous hammer price was 44,000 euros and that the condition is high. This also allows for a margin for competition in the auction.

Therefore, an estimated maximum purchase price could be 45,000 euros.