Based on the data provided, we can observe that the coin in question has had a varied auction history, with starting prices ranging between 15 and 72 euros. The average starting price of previous auctions has been 36.76 euros, while the average final price has been 69.02 euros.

The conservation grade of the coin to be auctioned is 80 (VF+), indicating that it is in fairly good condition. Additionally, in the past it has reached significantly high final prices, such as 225 euros in a 2016 auction.

Given this history and considering the coin is in a conservation grade of 80 (VF+), 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 other factors that may influence the decision of potential buyers.