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 not of high quality. Coins with a higher condition tend to reach higher prices at auctions.

2. Auction History:
- The average hammer price for similar coins in the past is 111.28 euros.
- The coin has been auctioned 134 times, of which it has sold 116 times, indicating good demand.
- Previous hammer prices for coins with similar conditions (around 70) have varied, but some examples are:
- 44 euros (2019-12-10)
- 50 euros (2020-05-26)
- 70 euros (2020-09-17)
- 65 euros (2020-12-15)

3. Starting Price and Average Starting Price:
- The current starting price is 30 euros, and the average starting price is 75.66 euros. This suggests that the starting price is relatively low compared to the average.

4. Recent Trends: In the most recent auctions, hammer prices have shown a trend of being in the range of 80 to 100 euros for coins of similar condition.

Based on these factors, an estimated maximum purchase price for the coin could be between 80 and 120 euros, considering that the condition is a limiting factor. A price of 100 euros could be a reasonable target, given the price history and observed demand.