Based on the data provided, we can observe that the coin in question has had an average starting price of 12.63 euros and an average final price of 29.5 euros in previous auctions. Additionally, its current condition is estimated at 75 (VF).

Considering the previous prices of this coin and its condition, as well as the fact that it will be auctioned in the upcoming days, we can estimate a maximum purchase price. Given that the final price has been significantly higher than the starting price in previous auctions, and taking into account the current condition of the coin, we could suggest an estimated maximum purchase price around 35-40 euros.

It is important to note that the final auction price will depend on several factors, such as the demand at that specific moment, the competition from other bidders, and the willingness of buyers to pay for that particular coin.