Based on the provided data, we can see that the coin will be auctioned in the coming days with a starting price of 15 euros. In the past, this coin has been auctioned three times, being sold on two occasions and not sold on one. The average starting price in previous auctions was 12.5 euros, while the average final price was 10 euros.

Additionally, the condition of this coin is described as 70 (F-VF), indicating a medium to low condition.

Regarding the previous prices of this coin, we can see that in the last auction in November 2022, the estimated price was 25 euros with a condition of 70 (F-VF). In previous auctions, estimated prices have ranged between 12 and 20 euros.

Given that the coin will be auctioned in the coming days with a starting price of 15 euros and considering the previous prices and condition of the coin, as well as the fact that it has been sold in the past, we could estimate a maximum purchase price around 20-25 euros. However, please note that the final price will depend on the demand at the auction and other potential interested buyers.