Based on the provided data, we can see that the coin is in a conservation grade of 30 (BC+), indicating that it is not in the best condition, but it is not the worst either.

The starting price for this auction is 40 euros, and it has been auctioned twice in the past, selling on both occasions. The average starting price in previous auctions was 120 euros, while the average final selling price was 187.5 euros.

Additionally, we have a record of a previous auction where the coin sold for 295 euros, with an estimated price of 350 euros and a starting price of 200 euros.

Given that the coin has sold in the past for prices higher than the current starting price, and considering the conservation grade and historical data, we could estimate a maximum purchase price of around 250-300 euros for this coin in the next auction. It is important to note that the final price may vary depending on the demand at the time of the auction.