Based on the data provided, we can observe that the coin in question has had an average auction closing price of 32.21 euros in previous auctions. Additionally, its current condition is 70 (VF-).

Considering that the coin's condition is relatively good and the average closing price has been 32.21 euros, we could estimate a maximum purchase price around 35-40 euros. However, keep in mind that the highest closing price recorded was 300 euros, so there could be significant fluctuations in the final auction price.

In summary, an estimated maximum purchase price for this coin in the upcoming auction could be around 35-40 euros, taking into account its price history and condition.