Based on the provided data, we can observe that the coin in question had a starting price of 60 euros in the most recent auction and is in a conservation grade of 70 (MBC-). Additionally, it has been auctioned a total of 49 times in the past, out of which it was sold 19 times.

The average starting price of the coin has been 23.74 euros, while the average final price has been 27.33 euros. Regarding the previous prices of the coin, we can see that they have ranged from 12 euros to 70 euros, depending on the auction date and the conservation grade of the coin.

Given that the coin will be auctioned soon and considering the historical data from previous auctions, as well as the fact that it has been sold in 38.77% of past auctions, we could estimate a maximum purchase price around 70-75 euros, taking into account the current starting price and the upward trend in final prices.

It is important to note that the final auction price may vary depending on the demand at the time of the auction and other external factors, so it is advisable to monitor its evolution to adjust the offer accordingly.