Based on the provided data, we can observe that the coin in question has had an average starting price of 55.33 euros in previous auctions, with an average closing price of 68.82 euros. The current condition of the coin is 80 (MBC+).

Additionally, a total of 61 auctions have been held in the past, with the coin being sold in 53 instances and not sold in 8 instances. For the upcoming auctions, it is expected that the coin will be auctioned 5 times.

Analyzing the previous prices of the coin, we can see that it has had significant variations in its starting, estimated, and closing prices over the years. However, in the last recorded auction, the coin was auctioned with a starting price of 50 euros, an estimated price of 80 euros, and a closing price of 60 euros, with a condition of 85.

Given that the coin has been sold in the majority of previous auctions and considering its condition and historical prices, we could estimate a maximum purchase price around 90-100 euros. It is important to note that the final price may vary depending on factors such as demand at the time of the auction and competition from other bidders.