Based on the provided data, we can observe that the coin is in a conservation grade of 70 (MBC-), indicating that it is not in the best condition, but it is also not among the worst.

Historically, the coin has been auctioned three times in the past, with varying starting and final prices. In the last recorded auction, the coin had an estimated price of 9 euros and was sold for 15 euros.

Considering that the average starting price is 14 euros and the average final price is 17 euros, and taking into account that the coin will be auctioned again in the coming days, we could estimate a maximum purchase price of around 18-20 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 conservation grade of the coin, and the willingness of buyers to bid.