Based on the data provided, we can observe that the coin in question has had an average auction closing price of 99.36 euros in previous auctions. Additionally, it has been auctioned 14 times in the past, of which it has been sold 12 times.

The current condition of the coin is estimated to be 70 (VF+), indicating that it is not in the best condition, but also not in the worst.

Considering the coin's previous prices, auction history, and taking into account its current condition of 70 (VF+), we could estimate a maximum purchase price around 150-160 euros. This estimation is based on the fact that the average auction closing price has been 99.36 euros, but considering that in the past it has been auctioned for over 180 euros on some occasions.

It is important to note that the final auction price may vary depending on the demand at the time of the auction and other factors that may influence the decision of potential buyers.