Based on the data provided, we can observe that the coin has had an average auction closing price of 83.11 euros in previous auctions. Additionally, the condition of this coin is rated at 70 (MBC-).

Considering that the coin's condition is relatively good and the average auction closing price has been 83.11 euros, we could estimate a maximum purchase price around 90-95 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.