To estimate a maximum purchase price for the coin in question, let's consider the following factors:

1. Starting Price: 130 euros. This is the initial price set for the auction.
2. Condition: The coin has a condition rating of 85 (ebc-), indicating that it is in fairly good shape, although not the best possible condition.
3. Auction History: The coin has been auctioned once in the past but did not sell, which may indicate that interest in this coin is not very high or that the starting price is too high for potential buyers.
4. Average Hammer Price: There is no data on previous sales, making it more difficult to establish a reference price.

Since the coin did not sell in its first auction and considering its condition, an estimated maximum purchase price could be slightly below the starting price to attract potential buyers.

Therefore, an estimated maximum purchase price could be between 100 and 120 euros, depending on the interest of collectors and the market at the time of the auction.