Based on the data provided, we can observe that the coin in question has performed well in previous auctions, with final prices greatly exceeding the starting and estimated prices. Additionally, the coin's preservation is at a high level (90 - EBC), which also influences its value.

The average auction price of this coin has been 66.29 euros, while the starting price this time is 75 euros. Considering the high preservation and the coin's good performance in previous auctions, we could estimate a maximum purchase price around 90-100 euros.

It is important to note that the final auction price will depend on the demand at that specific moment, so it is advisable to keep an eye on its evolution.