Based on the data provided, we can observe that the coin has had an average auction closing price of 78.8 euros in previous auctions. Additionally, the condition of the coin on this occasion is 75 (VF).

Considering that the coin will be auctioned in the coming days and has had an average starting price of 53.01 euros, we could estimate a maximum purchase price around 80-85 euros, taking into account the historical average closing price and the current condition of the coin.

It is important to note that the final auction price may vary depending on the demand at that specific moment, so it is advisable to pay attention to the auction to adjust the offer accordingly.