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

1. Current Condition: The coin has a condition rating of 85 (ebc-), indicating that it is in quite good shape. This generally translates to a higher price compared to coins in lower condition.

2. Starting Price and Average Hammer Price: The starting price is 130 euros, and the average hammer price in previous auctions is 185.65 euros. This suggests that, in general, coins of this reference tend to sell for above the starting price.

3. Auction History: In the past, the coin has had hammer prices that varied significantly. For example, in 2012 it sold for 360 euros, which is an exceptionally high price, but there are also lower hammer prices, such as 88 euros in 2019. However, the average hammer price is a good indicator of what can be expected.

4. Sales Trends: The coin has been auctioned 7 times, of which 6 have sold. This indicates good demand and consistent interest in the coin.

Given all this, an estimated maximum purchase price could be set in a range that considers the average hammer price and the current condition.

Estimation: We could consider a maximum purchase price of around 200-220 euros. This is based on the average hammer price and the good condition of the coin, suggesting that it could reach a price above average in this auction.