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-). This indicates that it is in an acceptable state, but it is not of the highest quality.

2. Auction History:
- The average hammer price for similar coins has been 114.28 euros.
- In previous auctions, coins with similar conditions have reached hammer prices that varied, but some examples are:
- 2023-01-18: 120 euros (condition 80)
- 2023-02-16: 130 euros (condition 85)
- 2023-03-22: 110 euros (condition 80)
- 2022-04-28: 100 euros (condition 80)

3. Starting Price and Average Starting Price: The starting price is 60 euros, and the average starting price is 65.03 euros. This suggests that the starting price is reasonable compared to the price history.

4. Recent Trends: In the most recent auctions, hammer prices have shown a trend of being higher, especially for coins in better conditions.

Based on these factors, an estimated maximum purchase price could be in the range of 120 to 140 euros. This is based on the hammer price history for coins of similar condition and the fact that the average hammer price is significantly higher than the current starting price.

Therefore, an estimated maximum purchase price for this coin could be 130 euros.