Based on the provided data, we can observe that the coin has had an average auction price of 313.63 euros in the past. Additionally, the condition of the coin in this auction is 75 (VF).

Considering the previous prices of the coin and its evolution, as well as the fact that it will be auctioned in the upcoming days, we could estimate a maximum purchase price around 380-400 euros. It is important to take into account that the condition of the coin can influence its final price, so it is advisable to consider this factor when making an offer.

In summary, an estimated maximum purchase price for this coin in the next auction could be around 380-400 euros.