Based on the data provided, we can observe that the coin in question has had an average auction closing price of 44.75 euros in previous auctions. Additionally, its condition has been described as '75 (VF).'

Considering that the starting price for the upcoming auction is 9 euros and the historical average starting price is 23.06 euros, we can see that the closing price has been significantly higher than the starting price in most previous auctions.

Given that the condition of the coin is 75 (VF), and considering that it has been auctioned in the past for prices ranging from 10 euros to 300 euros, we could estimate a maximum purchase price around 50-60 euros, taking into account the trend of previous prices and the condition of the coin.

It is important to note that the final auction price may vary depending on factors such as demand at that specific time, the number of interested parties in the coin, and other elements that may influence the bidding.