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

1. Coin Condition: The coin has a condition rating of 80 (MBC+), which indicates that it is in relatively good shape, but not of the highest quality (FDC).

2. Previous Auction Prices: By observing the hammer prices of coins with similar conditions and the auction history, we can see that the hammer prices have varied. For example:
- In 2023, a coin with a condition of 80 was sold for 20 euros.
- In 2023, another coin with a condition of 85 was sold for 75 euros.
- In 2024, a coin with a condition of 90 was sold for 70 euros.

3. Average Hammer Price: The average hammer price for this coin is 122.38 euros, but this may be influenced by coins in better condition.

4. Starting Price: The starting price is 30 euros, which can be a good indicator of the expected sale.

5. Price Trends: Given that there has been interest in this coin (18 out of 24 auctions have resulted in sales), this suggests that there is an active market.

Based on these factors, an estimated maximum purchase price could be between 60 and 100 euros, considering that the condition is good but not excellent, and that the highest hammer price in the past for coins of similar condition has been 75 euros.

Therefore, a reasonable maximum purchase price could be 80 euros.

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

1. Coin Condition: The coin has a condition rating of 95 (EBC+), indicating that it is in very good shape. This generally translates to a higher price compared to coins with lower conditions.

2. Starting Price and Previous Prices: The current starting price is 70 euros, and the average hammer price in previous auctions is 85.68 euros. This suggests that, in general, coins of this reference tend to sell for above the starting price.

3. Auction History: In the auction history, we have seen hammer prices that varied, but there are several examples where the coin has sold for above 80 euros, even reaching up to 135 euros in a previous auction.

4. Price Trends: Since the coin has been auctioned 28 times and has sold 26 of those times, there is a high sell-through rate, indicating that there is demand for this coin.

Based on these factors, an estimated maximum purchase price could be in the range of 100 to 120 euros, considering that the condition is high and that the price history shows similar coins have reached hammer prices in that range.

Therefore, a reasonable maximum purchase price could be 110 euros.

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

1. Coin Condition: The coin has a condition rating of 95 (EBC+), indicating that it is in very good shape. This generally translates to a higher price compared to coins with lower conditions.

2. Starting Price and Previous Prices: The current starting price is 70 euros, and the average hammer price in previous auctions is 123.2 euros. This suggests that, in general, coins of this reference tend to sell for a significantly higher price than their starting price.

3. Auction History: The coin has been auctioned 22 times, of which 20 have resulted in sales. This indicates good demand and consistent interest in this coin.

4. Previous Hammer Prices: Looking at previous hammer prices, we can see that they have varied, but there are several examples where the hammer price has exceeded 100 euros, even reaching up to 170 euros in some cases.

5. Recent Trends: In the most recent auctions, hammer prices have ranged from 80 to 160 euros, which also suggests that there is potential for a higher hammer price.

Taking all these factors into account, an estimated maximum purchase price for this coin could be in the range of 130 to 160 euros, given its condition and the history of hammer prices. This aligns with the average hammer price and the trends observed in previous auctions.

Therefore, a reasonable estimated maximum purchase price could be 150 euros.