Based on the data provided, we can observe that the coin in question has had an average auction closing price of 67.06 euros in previous auctions. Additionally, its current condition is 95 (UNC-).

Considering that the coin will be auctioned in the upcoming days with a starting price of 60 euros, we can estimate a maximum purchase price based on the historical average auction closing price and the current condition. Given the high condition and the average auction closing price of 67.06 euros, we could consider a maximum purchase price around 70-75 euros.

It is important to note that the final auction price may vary depending on the demand at that specific moment, so it is advisable to pay attention to the auction to adjust the offer accordingly.