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

1. Condition: The coin has a condition rating of 95 (EF+), indicating that it is in very good shape. This generally translates to a higher price compared to coins with lower conditions.

2. Current price and previous prices: The current starting price is 600 euros. In previous auctions, we have seen hammer prices that vary significantly, but there are examples of coins with similar conditions that have sold for significantly higher prices. For instance, in a previous auction, a coin with a condition of 95 sold for 1600 euros.

3. Price trends: The average hammer price for similar coins is 263.09 euros, but this can be influenced by the condition and demand at the time of the auction.

4. Sales history: The coin has been auctioned 98 times, with a 79.6% sell-through rate, indicating good demand. Additionally, the fact that it will be auctioned in the coming days may increase interest.

5. Comparison with previous hammer prices: Looking at previous hammer prices for coins with similar conditions, the price range can be quite broad, but there are examples of sales exceeding 1000 euros.

Based on these factors, an estimated maximum purchase price could be between 1200 and 1800 euros, considering that the condition is high and there is a history of successful sales at elevated prices. However, given the starting price of 600 euros, it is likely that bidders will be willing to compete, which could drive the hammer price towards the upper end of this estimate.