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

1. Current Condition: The coin has a condition of 70 (VF-), indicating that it is in relatively good shape, but not among the best qualities.

2. Auction History:
- The average hammer price in previous auctions is 72.54 euros.
- The average starting price is 59.95 euros.
- In the past, hammer prices have varied significantly, ranging from 20 euros to 200 euros, depending on the condition and demand at the time of the auction.

3. Recent Trends:
- In the most recent auctions, hammer prices have been in a range of 45 to 65 euros for similar conditions (75-85).
- The last auction with a hammer price of 60 euros for a condition of 85 suggests that the market is willing to pay more for coins in better condition.

4. Starting Price: The starting price is 35 euros, indicating that the seller expects a lower price initially, but this does not necessarily reflect the true value of the coin.

Based on these factors, an estimated maximum purchase price for the coin, considering its condition and price history, could be between 70 and 90 euros. This is because, although the condition is not the highest, the interest in VF- quality coins may lead to a hammer price that approaches the higher levels observed in the past.

Therefore, a reasonable estimated maximum purchase price could be 80 euros.