Based on the data provided, we can observe that the coin in question has had an average auction closing price of 24.11 euros in previous auctions. Additionally, its condition has been described as 75 (VF), indicating a fairly good preservation.

Taking into account the previous prices of this coin, as well as its condition and the fact that it has been auctioned 9 times in the past with a 100% success rate in sales, we could estimate a maximum purchase price around 30-35 euros. Given that the average auction closing price has been 24.11 euros, and considering the upward trend in previous auction prices, a maximum purchase price of 35 euros could be reasonable.

It is important to note that the final auction price will depend on the demand at that specific moment, so it is advisable to pay attention to the auction and adjust the offer accordingly.