Based on the data provided, we can observe that the coin in question has performed well in previous auctions, with final prices exceeding significantly the starting and estimated prices. Additionally, the coin's preservation is at an acceptable level (BC+).

The average auction price for this coin has been 176.24 euros, with an average starting price of 87.71 euros. However, in previous auctions, we have seen final prices reach up to 600 euros.

Considering that the coin will be auctioned in euros and taking into account its successful auction history, preservation, and demand for this type of coin, we could estimate a maximum purchase price around 500-600 euros. It is important to note that the final price will depend on the competition in the auction and the interest of potential buyers at that specific moment.