Based on the data provided, we can observe that the coin has had an average starting price in previous auctions of 71.76 euros and an average closing price of 122.78 euros. Additionally, the condition of this coin has been described as '75 (MBC)'.

When analyzing the previous prices of the coin in past auctions, we can see that it has had a fairly wide range of estimated prices, ranging from 70 euros to 200 euros, with closing prices ranging from 65 euros to 160 euros.

Given that the condition of the coin has remained constant at '75 (MBC)' and considering the historical prices of previous auctions, as well as the current starting price of 60 euros, we could estimate a maximum purchase price of around 150 euros for this coin in the next auction. This price is in line with previous estimated prices and the average closing price observed in past auctions.