Based on the provided data, we can observe that the coin in question has had a starting price in the current auction of 40 euros and is in a conservation grade of 85 (ebc-). Additionally, it has been auctioned a total of 26 times in the past, sold 12 times, and remained unsold 14 times.

The average starting price in previous auctions has been 43.55 euros, while the average final price has been 41.36 euros.

Analyzing the previous prices of this coin, we can see that it has had significant variations in its auction values over the years. The highest price reached was 150 euros in a 2016 auction, while the lowest price was 11.92 euros in a 2013 auction.

Given that the coin's conservation is quite good (85 ebc-) and considering the previous prices and the current starting price, as well as the price trends in previous auctions, we could estimate a maximum purchase price of around 120 euros for this coin in the current auction. It is important to note that this is just an estimate and the final price could vary depending on demand at the auction.