To estimate a maximum purchase price for the coin in question, we can consider several factors based on the provided data:

1. Coin Condition: The coin to be auctioned has a condition of 85 (ebc-). This is an important factor, as coins in better condition tend to reach higher prices.

2. Previous Prices: By observing the hammer prices of coins with similar conditions (85 and 95), we can see that the hammer prices for coins in condition 85 have ranged between 60 and 180 euros in previous auctions. For example, in 2018, a coin with condition 85 was sold for 60 euros, while in 2022 it was sold for 140 euros.

3. Average Hammer Price: The average hammer price for this particular coin is 140.17 euros, indicating that, in general, coins of this reference tend to sell for prices close to this figure.

4. Starting Price: The starting price of the auction is 60 euros, which is relatively low compared to previous hammer prices.

5. Auction Trends: The coin has been auctioned 46 times, of which 42 have been sold. This suggests that there is a consistent interest in this coin, which may influence the hammer price.

Taking all these factors into account, an estimated maximum purchase price for the coin in question could be between 120 and 180 euros, considering that the condition is good and there is a history of hammer prices that supports this estimate. A price of 150 euros could be a reasonable target, as it falls in the middle of this range and aligns with the average hammer price.