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

1. Coin Condition: The coin has a condition rating of 95 (S/C-), indicating that it is in very good shape. This generally increases its value compared to coins with lower conditions.

2. Current Listing Price and Previous Prices: The current listing price is 1200 euros. In previous auctions, we have seen hammer prices that vary significantly, but there are examples of similar coins in comparable condition that have sold for higher prices. For instance, in recent auctions, coins with a condition rating of 100 have sold for up to 1900 euros.

3. Price Trends: The average hammer price for similar coins is approximately 763.74 euros, but this can be influenced by the condition and demand at the time of the auction.

4. Auction History: The coin has been auctioned 34 times, with a 76% sell-through rate, indicating consistent interest in this coin.

Given that the condition of this coin is high and considering the hammer prices of similar coins, an estimated maximum purchase price could be between 1800 and 2000 euros, especially if there is interest in the auction. However, since the listing price is 1200 euros, it is likely that the hammer price will not significantly exceed this value unless there is active competition among bidders.

Maximum Purchase Estimate: 2000 euros.