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

1. Starting price: 50 euros.
2. Average hammer price in the past: 110 euros.
3. Current condition: 70 (MBC-), which indicates a fairly good condition, although not the best.
4. Auction history: It has been auctioned 2 times in the past, with 1 sale and 1 no sale. This suggests that there is interest, but also that there may be limitations in demand.
5. Average starting price: 50 euros, indicating that the starting price has remained constant.

Given that the average hammer price in the past was 110 euros and considering that the current condition is 70, which is lower than the condition of the coins that reached that price, we could estimate a maximum purchase price that is lower than the previous average hammer price.

Taking all these factors into account, an estimated maximum purchase price could be between 80 and 100 euros. This reflects an interest in the coin, but also takes into account the condition and auction history.

Therefore, a reasonable estimated maximum purchase price would be 90 euros.

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

1. Starting Price: 25 euros.
2. Condition: The coin has a condition rating of 80 (VF+), indicating that it is in quite good shape.
3. Auction History:
- It has been auctioned 4 times in the past, of which it has sold 2 times.
- The average hammer price in previous auctions is 25 euros.
- In 2016, it was auctioned with a starting price of 47.46 euros, although the final hammer price is unknown.

4. Average Starting Price: 29.15 euros, suggesting that the market has valued this coin slightly higher on other occasions.

Given that the condition is good and the average hammer price is equal to the current starting price, but considering that there have been past auctions with higher starting prices, we could estimate a maximum purchase price.

Taking all these factors into account, an estimated maximum purchase price could be between 30 and 35 euros, considering that the condition is favorable and the auction history shows interest in the coin.

Therefore, a reasonable maximum purchase price could be 35 euros.

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

1. Current Condition: The coin has a condition rating of 75 (MBC), indicating that it is in fairly good shape, although not the best possible condition.

2. Auction History:
- The average hammer price in previous auctions is 74.93 euros.
- In past auctions, hammer prices have ranged from 22 euros to 120 euros, depending on the condition and other factors.
- The last auction for this coin had a hammer price of 35 euros, which may indicate a downward trend in interest or value for the coin.

3. Starting Price and Average Starting Price:
- The current starting price is 30 euros, which is below the average starting price of 50.7 euros. This could suggest that the coin is being auctioned at an attractive price.

4. Sales Trends: Of the 11 times it has been auctioned, it has sold on 8 occasions, suggesting there is reasonable interest in the coin.

Based on these factors, an estimated maximum purchase price could be set in a range that considers the average hammer price and the current condition. Given that the condition is 75 and considering the average hammer price of 74.93 euros, a reasonable maximum purchase price could be:

Estimated maximum purchase price: 80 euros.

This price takes into account the condition, price history, and interest in the coin, allowing for a margin for competition in the auction.