Based on the data provided, we can observe that the coin has performed well in previous auctions, with final prices exceeding the starting and estimated prices in most cases. The current conservation grade of the coin is 85 (ebc-), which is quite good.

The average final auction price of the coin in previous auctions has been 64.67 euros, with an average starting price of 34.08 euros. Considering the current conservation grade of 85 (ebc-) and the fact that prices of up to 150 euros have been reached in previous auctions, we could estimate a maximum purchase price of around 140-160 euros for this coin in the upcoming auction.

It is important to note that the final auction price will depend on the demand at that specific moment, so it is advisable to monitor its evolution and adjust the offer accordingly.