Based on the provided data, we can observe that the coin in question has had varying starting and final prices in previous auctions, ranging from 12 euros to 110 euros. The current estimated condition of the coin is 30 (BC+).

The average starting price in previous auctions has been 36.2 euros, while the average final price has been 49.45 euros. Additionally, it has been auctioned a total of 12 times in the past, being sold in 11 occasions and not sold in one.

Taking into consideration the previous prices of the coin, its current condition, and the fact that in a previous auction its estimated price was 200 euros but it was sold for 120 euros, we could estimate a maximum purchase price around 150 euros. This estimation considers the condition and previous prices, but also takes into account that the estimated price in a previous auction was not fully reached.

It is important to note that the final price in an auction can vary depending on various factors, such as the demand at that specific moment, the presence of other interested collectors, among others. Therefore, this estimation is just a reference and the final price could be different in the current auction.