Based on the data provided, we can observe that the coin in question has had an average auction price of 113.07 euros in previous auctions. Additionally, the current condition of the coin is estimated to be 70 (VF+), indicating that it is not in perfect condition, but also not in poor condition.

Considering that the starting price of the upcoming auction is 25 euros and the historical average starting price is 48.11 euros, we can infer that the final auction price could exceed the current starting price.

Given that the coin has been sold in the past in a price range from 11 euros to 420 euros, and considering its current condition, we could estimate a maximum purchase price around 150-200 euros.

It is important to note that the final auction price can vary depending on factors such as demand at that specific moment, competition from other bidders, and interest in the coin in question. Therefore, it is advisable to pay close attention to the auction and adjust the offer accordingly.