Based on the data provided, we can observe that the coin in question has had a starting price in the current auction of 25 euros, with a historical average starting price of 40.19 euros and a historical average closing price of 63.04 euros. The conservation of the coin is estimated at 70 (VF+).

Additionally, several auctions have been conducted in the past, with varied starting, estimated, and closing prices. The coin has been sold 23 times and has not been sold 3 times.

Considering the previous prices of the coin in past auctions and its current conservation, as well as the fact that it has been sold in the majority of previous auctions, we could estimate a maximum purchase price around 70-75 euros.

It is important to note that the final price of the current auction may vary depending on demand and other factors at the time of the auction.