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 75 (VF), indicating that it is in an acceptable state, but not among the best conditions.

2. Auction History:
- The average hammer price in previous auctions is 1070.19 euros.
- In past auctions, hammer prices have varied, with a maximum of 1500 euros and a minimum of 750 euros.
- The condition of the coins auctioned in the past varies, and hammer prices tend to be higher for coins in better condition.

3. Starting Price: The starting price is 1000 euros, which is a good reference point.

4. Price Trends: In recent auctions, hammer prices have been in the range of 1000 to 1500 euros, depending on the condition.

Given that the condition of the coin is 75 (VF), and considering the auction price history, an estimated maximum purchase price could be around 1200 euros. This is based on the fact that, although the coin is not in the best condition, it has a price history suggesting it could reach a price above average, but not as high as the levels for the best conditions.

Estimated maximum purchase price: 1200 euros.