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 75 (MBC), indicating that it is in quite good shape. This generally translates to a higher price compared to coins with lower conditions.

2. Auction History:
- The average hammer price for similar coins has been 88.42 euros.
- In previous auctions, coins with a similar condition (75) have reached hammer prices that vary, but some examples are:
- 95 euros (2018-12-11)
- 90 euros (2019-07-04)
- 170 euros (2022-07-07)
- The trend shows that coins in good condition can achieve significantly higher prices than the average price.

3. Starting Price and Average Starting Price:
- The current starting price is 60 euros, and the average starting price in the past has been 50.43 euros. This suggests that the current starting price is reasonable and could attract more bidders.

4. Demand and Supply: The coin has been auctioned 102 times, with a high sales percentage (88 out of 102). This indicates a consistent interest in this coin, which may drive up its price at auction.

Taking all these factors into account, an estimated maximum purchase price for this coin could be between 100 and 120 euros. This is based on the hammer price history for coins of similar condition and the price trends in recent auctions.