Based on the data provided, we can observe that the coin in question has performed well in previous auctions. The current starting price is 18 euros, with a history of winning bid prices that have been increasing over time.

The average winning bid price in previous auctions has been 46.25 euros, indicating interest and demand for this coin. Additionally, the condition of the coin is rated at 70 (VF+), which is acceptable but not excellent.

Considering the previous winning bid prices and the interest this coin has generated in past auctions, as well as its current condition, we could estimate a maximum purchase price around 60-65 euros. It is important to note that the final price will depend on the demand at the auction and the willingness of buyers to bid on it.