Based on the data provided, we can observe that the coin in question has had an average auction price of 161.12 euros in the past. Additionally, the condition of the coin in this auction is 70 (MBC-).

Considering that the condition of the coin is 70 (MBC-), and that the historical average auction price has been 161.12 euros, we can estimate a maximum purchase price for this coin in the current auction. Since the condition is not the best, it is prudent to adjust the estimated price accordingly.

Given that the condition is 70 (MBC-), and taking into account the price fluctuations in previous auctions, we could estimate a maximum purchase price around 140-150 euros for this coin in the current auction. It is important to note that this is just an estimate and the final price could vary depending on demand and other factors in the auction.