Based on the data provided, we can observe that the coin in question has had significantly varying starting and estimated prices in previous auctions. The current condition of the coin is estimated at 30 (BC+), indicating that it is not in the best condition, but also not in the worst.

The average auction closing price in previous auctions has been 53 euros, with an average starting price of 45.57 euros. However, previous prices for this coin have ranged from 9 euros to 125 euros, with estimates ranging from 15 euros to 200 euros.

Given that the coin has been sold five times in the past, and considering its current condition and previous prices, we could estimate a maximum purchase price around 60 euros. It is important to note that the final price in an auction can vary depending on demand and other factors, so it is advisable to monitor the auction's progress in real time if you decide to participate.