Based on the provided data, we can observe that the coin in question has had an average auction closing price of 95.9 euros in previous auctions. Additionally, its current condition is estimated at 85 (VF+/XF-).

Considering that the starting price for the upcoming auction is 40 euros and the average starting price is 48 euros, we can infer that there is interest and demand for this coin.

Given that the coin has been auctioned 12 times in the past, with a high percentage of successful sales (11 out of 12), and that the average closing price has been significantly higher than the starting price, we can conclude that there is a valued interest by collectors for this particular coin.

Taking into account this data, as well as the history of previous prices where it has been auctioned for over 150 euros on one occasion, and considering the current condition of the coin, we could estimate a maximum purchase price around 120-140 euros. This would allow for room for a possible competitive bid at the auction, considering the previous interest in this coin and its history of successful auctions at prices higher than the starting price.