Based on the provided data, we can observe that the coin in question has had a starting price in this auction of 25 euros and is in a conservation grade of 85 (ebc-). Additionally, it has been auctioned in the past 14 times, out of which it has been sold 8 times.

The average starting price in previous auctions has been 23.63 euros, while the average final price has been 79.13 euros. Regarding the previous prices of this coin, we can see that it has had final values ranging between 20 and 300 euros.

Given the coin's good conservation grade (85 ebc-) and considering the previous final prices, as well as the average final price, we could estimate a maximum purchase price around 100-120 euros. It is important to note that the final price will depend on the demand at the auction and the willingness of buyers to bid on this particular coin.