Based on the data provided, we can observe that the coin in question has had varying starting and final prices in previous auctions. The coin's condition has been described as '70 (MBC-)', indicating a medium to low conservation state.

The average final price of the coin in previous auctions has been 72.82 euros, with an average starting price of 79.19 euros. However, the highest estimated price reached in a past auction was 325 euros.

Taking into account these data, the coin's condition, and the fact that it has been auctioned 22 times in the past, we could estimate a maximum purchase price around 100-120 euros. It is important to consider that the final price will depend on the demand at the auction and the willingness of buyers to bid on this particular coin.