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

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

2. Previous auction prices: By looking at the hammer prices from previous auctions for coins with a similar condition (95), we can see that the hammer prices have varied, but there are several examples where the hammer price has exceeded 150 euros. For example:
- In 2020, a coin with a condition of 95 was sold for 180 euros.
- In 2019, another coin with the same condition was sold for 140 euros.
- In 2023, a coin with a condition of 95 was sold for 185 euros.

3. Average hammer price: The average hammer price for this coin is 148.73 euros, which is also a good indicator of the expected value.

4. Starting price: The starting price is 125 euros, which is reasonable, but given the history of hammer prices, it is likely that the final price will be higher.

Taking all these factors into account, an estimated maximum purchase price could be between 180 and 200 euros, as this reflects both the history of hammer prices and the good condition of the coin.

Therefore, an estimated maximum purchase price could be 200 euros.