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

1. Current Condition: The coin has a condition of 75 (MBC), which indicates that it is in an acceptable state, but not among the best qualities.

2. Historical Prices: By observing the hammer prices of coins with similar conditions (75-80), we can see that the hammer prices have varied. For example:
- In previous auctions, coins with a condition of 75 have reached hammer prices of up to 95 euros.
- Coins with a condition of 80 have had hammer prices ranging from 70 to 110 euros.

3. Average Hammer Price: The average hammer price for this coin is 111.28 euros, suggesting that, in general, buyers are willing to pay more than the starting price.

4. Starting Price and Average Starting Price: The starting price is 60 euros, and the average starting price is 75.66 euros. This indicates that the market expects the coin to sell for above its starting price.

5. Recent Trends: In the most recent auctions, hammer prices have shown a trend of being higher, especially for coins in similar conditions.

Based on these factors, an estimated maximum purchase price for this coin could be between 90 and 120 euros, considering that the condition is MBC and there is market interest in coins of this quality. A price of 100 euros could be a reasonable target, as it falls in the middle of this range and is an attractive number for buyers.