Based on the data provided, we can observe that the average starting price of this coin in previous auctions has been 63.74 euros, while the average closing price has been 108.34 euros. The conservation grade of the coin to be auctioned is 70 (VF-).

Considering that the coin has been auctioned 97 times in the past, with a total of 89 successful sales and 8 unsold, we can see that there is considerable interest in this coin among collectors.

Given that the conservation grade of the coin is 70 (VF-), and taking into account the previous prices of similar auctions as well as the interest it has generated in the past, we could estimate a maximum purchase price around 110-120 euros.

It is important to note that the final auction price will depend on several factors, such as the demand at that specific moment, the competition from other bidders, and the willingness of buyers to pay for this particular coin.