Based on the data provided, we can see that the coin in question has had an average auction closing price of 67.23 euros in previous auctions. Additionally, the condition of this coin has been classified as '85 (ebc-)'.

Given that the condition is quite good and considering the auction price history, we could estimate a maximum purchase price of around 80-90 euros for this coin in the next auction. It is important to consider that factors such as demand at the time of the auction and competition from other bidders can influence the final selling price.