To estimate a maximum purchase price for the coin in question, we will consider several factors:

1. Condition of the coin: The coin has a condition rating of 70 (VF-), indicating that it is in acceptable condition but not of high quality. This generally affects the price, as coins in better condition tend to fetch higher prices.

2. Current listing price and previous prices: The current listing price is 60 euros. The average hammer price in previous auctions for similar coins is 231.34 euros, suggesting that there is significant potential for the hammer price to be much higher than the listing price.

3. Auction history: The coin has been auctioned 522 times, with 468 sales. This indicates that there is an active market for this coin. Additionally, previous hammer prices for coins with similar conditions (70) have varied, but some have reached hammer prices of up to 240 euros.

4. Recent trends: Looking at the most recent auctions, hammer prices for coins of similar condition have shown a range that can go from 60 euros to over 200 euros, depending on demand and collector interest.

Based on these factors, an estimated maximum purchase price for this coin could be in the range of 200 to 250 euros. This range takes into account the condition, price history, and recent market activity. However, it is important to note that the final price may vary depending on competition in the auction and collector interest at that time.