Based on the data provided, we can see that the coin in question has had a starting price in the current auction of 18 euros and is in a conservation grade of 95 (EBC+). Additionally, it has been auctioned in the past on several occasions, with closing prices ranging between 12 and 180 euros.

The average closing price of the coin in the past has been 45 euros, with an average starting price of 41.33 euros. Considering that the coin is in high conservation and has performed well in previous auctions, we could estimate a maximum purchase price around 50-60 euros.

It is important to note that the final price of the current auction will depend on various factors, such as the demand at that specific moment, the competition from other bidders, and the buyers' perception of the coin's value at that time.