Based on the provided data, we can observe that the coin in question has had an average starting price in previous auctions of approximately 102.27 euros, with an average closing price of around 160.16 euros. The coin's condition is described as 70 (VF+), indicating that it is in an acceptable but not excellent condition.

Additionally, a total of 23 auctions have been conducted in the past, with the coin being sold in 21 instances and not sold in 2 instances. This suggests that the coin has a relatively stable demand in the auction market.

Considering the coin's previous prices and its current condition, as well as the fact that it will be auctioned in the coming days, we could estimate a maximum purchase price of around 180-200 euros. Given that the average closing price in previous auctions has been 160.16 euros, a maximum purchase price of 180-200 euros could be reasonable, considering the demand and condition of the coin.