Based on the data provided, we can observe that the coin in question has had an average auction closing price of 130.6 euros in previous auctions. Additionally, its condition has been described as 70 (MBC-).

Considering that the starting price for the next auction is 75 euros and the historical average closing price is 130.6 euros, we could estimate a maximum purchase price around 130-140 euros, taking into account the condition of the coin and the current starting price.

It is important to note that this is just an estimate and the final auction price may vary depending on factors such as demand at that specific time, competition from other bidders, and interest in the coin at that particular auction.