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

1. Starting Price: 7000 euros. This is the initial price set for the auction.
2. 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.
3. Auction History:
- It has been auctioned 4 times in the past, of which it has sold 3 times.
- The average hammer price in previous auctions is 5516.67 euros, which can provide an idea of the market value.
- In the last auction, the starting price was 6000 euros with an estimated price of 10000 euros, but it did not sell, which may indicate that the starting price was too high for the market at that time.

4. Comparison with Previous Prices:
- In previous auctions, the hammer prices have been 700 euros and 850 euros for coins with a condition of 70, which is significantly lower than the current starting price.
- The last auction with a condition of 95 had a starting price of 6000 euros, suggesting that the market is willing to pay more for coins in better condition.

Given that the condition of the coin is high and considering the price history, an estimated maximum purchase price could be positioned between the starting price and the average hammer price.

Taking all these factors into account, an estimated maximum purchase price could be around 8500 euros. This reflects a value that considers the high condition and price history, but is also cautious in relation to the starting price and market behavior in previous auctions.