Based on the provided data, we can observe that the coin in question has had an average auction closing price of 112.73 euros in previous auctions. Additionally, its condition is estimated at 80 (MBC+).

Considering that the starting price for the upcoming auction is 200 euros and the historical average starting price is 74.58 euros, we can see that the current starting price is above the average. However, given that the coin has sold in 97.3% of previous auctions, there is likely interest in acquiring it.

Given the good condition of the coin (80 MBC+) and considering the historical closing prices, as well as the fact that it has sold in the vast majority of previous auctions, we could estimate a maximum purchase price around 150-170 euros.

It is important to note that the final closing price may vary depending on the competition in the auction and the interest of potential buyers at that specific moment.