AI Recommendation
Based on the provided data, we can see that the coin in question has a conservation grade of 70 (MBC-), with a starting price of 30 euros in the upcoming auction.
In previous auctions, the coin has been sold for closing prices of 35 and 30 euros, with estimated prices of 50 euros on both occasions.
Considering that the coin has sold in the past for prices lower than its estimation, and given the conservation grade of 70 (MBC-), we could estimate a maximum purchase price around 40-45 euros. It is important to note that the final price will depend on the demand at the auction and other potential interested buyers.