Based on the data provided, we can observe that the coin in question has had an average auction closing price of 333.87 euros in previous auctions. Additionally, its current condition is 80 (VF+).

Considering that the coin's condition is good but not excellent, and taking into account the history of previous auction closing prices, as well as the fact that it has been auctioned 66 times in the past, we could estimate a maximum purchase price around 400-450 euros.

It is important to note that the final auction price may vary depending on factors such as demand at the time of the auction and buyers' willingness to bid higher.