Based on the data provided, we can observe that the coin in question has had an average auction price of 133.39 euros in previous auctions. Additionally, the current condition of the coin is 75 (VF).

Considering that the average auction price has been 133.39 euros and that the current condition is 75, we can estimate a maximum purchase price for this coin in the upcoming auction. Given that the condition is good but not excellent, and taking into account that the average auction price is a relevant indicator, we could consider an estimated maximum purchase price around 150-160 euros.

It is important to note that the final auction price may vary depending on factors such as demand at that specific time, competition from other bidders, and particular interest in the coin in question.