Based on the data provided, we can observe that the coin in question has had a starting price in the current auction of 80 euros and is in a conservation grade of 70 (MBC-). Additionally, it has been auctioned a total of 34 times in the past, out of which it has been sold 26 times.

The average starting price of previous auctions has been 51.06 euros, while the average final price has been 71.73 euros. Regarding the previous prices of this coin, we can see that it has had variations in its starting, estimated, and final values throughout past auctions.

Considering the information provided and taking into account the price history of this coin, as well as its current conservation grade, we could estimate a maximum purchase price around 90-100 euros. It is important to note that this is just an estimate and the final price may vary depending on the demand in the current auction.