Based on the data provided, we can observe that the coin has had an average auction closing price of 145.76 euros in previous auctions. Additionally, the condition of this coin has been described as '75 (VF).'

Considering that the condition of the coin is 75 (VF) and that the average auction closing price in previous auctions has been 145.76 euros, we could estimate a maximum purchase price around 160-170 euros for this coin in the upcoming auction.

It is important to note that the final auction price may vary depending on factors such as demand at that specific time, the number of interested parties in the coin, and other elements that may influence the bidding.