Based on the provided data, we can observe that the coin in question had a starting price of 200 euros in this auction and is in a conservation state of 70 (MBC-). Furthermore, in previous auctions, it has reached closing prices of 800 euros, 9500 euros, and 291 euros, with conservation ratings of 80, 85, and no information available, respectively.

Given that the average closing price in previous auctions was 2749 euros and considering the current conservation state is 70 (MBC-), we could estimate a maximum purchase price for this coin around 1000-1500 euros. It is important to note that factors such as demand at the time of the auction and the availability of interested buyers can influence the final selling price.