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

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

2. Historical Prices:
- The average hammer price in previous auctions has been 120.01 euros.
- Hammer prices have ranged from 50 euros to 516.2 euros, depending on the condition and demand at the time of the auction.
- The last auction for this coin had a starting price of 30 euros, indicating that there is interest in the coin, but the final hammer price could be significantly higher.

3. Sales Trends:
- Out of the 55 times it has been auctioned, it has sold on 41 occasions, suggesting that there is an active market for this coin.
- The average starting price is 75.99 euros, indicating that sellers often set higher prices than the current starting price.

4. Comparison with Previous Prices:
- In previous auctions, coins with similar conditions have reached hammer prices ranging from 80 to 170 euros, depending on demand and quality.

Based on these factors, an estimated maximum purchase price for this coin could be in the range of 100 to 150 euros. This range takes into account the current condition, historical prices, and sales trends in the market. However, it is important to note that the final price may vary depending on competition in the auction and the interest of other buyers.