Based on the data provided, we can observe that the coin in question has had an average auction closing price of 58.74 euros in previous auctions. Additionally, the condition of this coin has been described as 70 (MBC-).

Considering that the condition of the coin is good but not excellent, and that the average auction closing price has been 58.74 euros, we could estimate a maximum purchase price around 60-65 euros. It is important to note that this is just an estimate and the final price may vary depending on factors such as demand at the auction and competition from other bidders.