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

1. Condition: The coin has a condition rating of 80 (MS+), 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 this coin is 169.36 euros, suggesting that, on average, buyers are willing to pay significantly more than the starting price.
- In previous auctions, we have seen hammer prices that varied, but some have reached up to 2200 euros under exceptional conditions (such as in the auction on 2022-03-17).

3. Starting price and previous prices:
- The current starting price is 60 euros, which is slightly higher than the average starting price of 53.97 euros. This may indicate growing interest in this coin.
- In previous auctions, the highest hammer price for a coin with a similar condition was 180 euros (2018-10-17).

4. Recent trends: The coin has sold in 30 out of the 32 previous auctions, indicating good demand.

Based on these factors, an estimated maximum purchase price could be in the range of 180 to 250 euros, considering that the condition is good and there is a history of hammer prices that supports this estimate.

Therefore, a reasonable maximum purchase price could be 250 euros.