Based on the provided data, we can observe that the coin in question had a starting price of 45 euros in the most recent auction, with a conservation value of 70 (MBC-). Additionally, it has been auctioned a total of 26 times in the past, out of which it was sold 22 times.

The average starting price of previous auctions has been 26.14 euros, while the average final price has been 29.26 euros. Regarding the previous prices of the coin, we can see that it has had variations in its starting, estimated, and final values throughout past auctions.

Taking into consideration this data, as well as the trend of previous prices and the conservation value of the coin, we could estimate a maximum purchase price around 60-70 euros. It is important to note that the final auction price will depend on the demand at that specific moment, so it is advisable to keep an eye on its evolution.