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

1. Coin Condition: The coin has a condition rating of 80 (MBC+), indicating that it is in relatively good shape. This generally translates to a higher price compared to coins with lower conditions.

2. Previous Auction Prices: By observing the hammer prices of coins with similar conditions (80-85), we can see that the hammer prices have varied, but there are examples where they have reached up to 120 euros. For example:
- In 2018, a coin with a condition of 85 was auctioned for 120 euros.
- In 2022, a coin with a condition of 80 was auctioned for 100 euros.

3. Average Hammer Price: The average hammer price for this coin is 117.61 euros, which also suggests that the hammer price can be considerably high.

4. Starting Price and Average Starting Price: The current starting price is 60 euros, and the average starting price is 66.29 euros. This indicates that the starting price is reasonable compared to the price history.

5. Auction Trends: Since the coin has been auctioned 32 times and has had a sell-through rate of 93.75% (30 out of 32), this suggests that there is consistent interest in this coin.

Based on these factors, an estimated maximum purchase price could be in the range of 120 to 140 euros, considering that the condition is good and there are precedents for hammer prices in that range. However, since the market can be volatile, it is advisable to keep an eye on the auction and adjust the bid accordingly.