Based on the data provided, we can observe that the coin in question has had an average auction closing price of 83.44 euros in previous auctions. Additionally, its current condition is estimated at 75 (VF).

Considering the coin's previous prices and its evolution, as well as its current condition, we can estimate a maximum purchase price for this coin in a future auction. Given that the average closing price has been 83.44 euros and the current condition is 75 (VF), we could consider an estimated maximum purchase price around 90-100 euros.

It is important to note that the final auction price may vary depending on factors such as demand at that specific time, competition from other bidders, and the evolution of the numismatic market.