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

1. Starting Price: 60 euros. This is the initial price of the auction.
2. Condition: The coin has a condition rating of 85 (ebc-), indicating that it is in quite good shape. This generally increases its value compared to coins with lower conditions.
3. Auction History:
- It has been auctioned 3 times in the past, of which it has sold 2 times and not sold 1 time.
- The average starting price in previous auctions is 82.52 euros, and the average hammer price is 98.79 euros.
- In previous auctions, the hammer prices were 97.57 euros (condition 16) and 100 euros (condition 80).

Given that the current condition of the coin is better than that of previous auctions (85 compared to 80 and 16), we can infer that the hammer price could be higher than before.

### Estimated Maximum Purchase Price:
- Considering the average hammer price of 98.79 euros and the fact that the condition is better, an estimated hammer price could be in the range of 100 to 110 euros.
- However, since the starting price is 60 euros, bidders are likely to be willing to pay more, but they may not necessarily reach the previous average hammer price.

Therefore, an estimated maximum purchase price could be around 100-110 euros, taking into account the good condition and the price history.