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

1. Current Condition: The coin has a condition of 75 (MBC), which indicates that it is in fairly good shape, but not among the best qualities (FDC).

2. Auction History:
- The average hammer price for this coin in the past is 429.87 euros.
- The average starting price is 183.01 euros.
- It has been auctioned 89 times, of which it has sold 66 times, indicating good demand.

3. Previous Prices:
- In previous auctions, hammer prices for coins with similar conditions (75) have varied, but there are examples of auctions reaching up to 700 euros (as in 2012).
- There are also examples of lower hammer prices, but in general, prices tend to be higher for conditions of 75 or above.

4. Recent Trends:
- In the most recent auctions, hammer prices have been in the range of 70 to 480 euros for similar conditions.

Based on this data, an estimated maximum purchase price for this coin could be in the range of 400 to 600 euros, considering that the condition is good and that the price history shows that coins in similar conditions have reached higher prices in the past.

Therefore, a reasonable maximum purchase price could be 500 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 80 (MBC+), indicating that it is in quite good shape. This generally translates to a higher price compared to coins with lower conditions.

2. Previous Auction Prices: By observing the hammer prices of coins with similar conditions (80 and 85), we can see that the hammer prices have varied considerably. For example:
- In 2020, a coin with a condition of 80 sold for 110 euros.
- In 2018, another coin with a condition of 80 sold for 80 euros.
- In 2022, a coin with a condition of 80 sold for 213 euros.

3. Average Hammer Price: The average hammer price for this coin is 165.94 euros, which gives us a good reference for what buyers are willing to pay.

4. Starting Price and Estimates: The starting price is 60 euros, and the average starting price is 57.62 euros. This suggests that the starting price is reasonable and could attract buyers.

5. Auction Trends: Given that it has been auctioned 70 times in the past and sold 63 times, this indicates good demand for this coin.

Based on these factors, an estimated maximum purchase price could be in the range of 200 to 300 euros, considering that the condition is good and there is a history of hammer prices that supports this estimate. However, since the market can be volatile, it is advisable to keep an eye on the auction and adjust the bid according to the competition.

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 rating of 75 (MBC), indicating that it is in relatively good shape, but not among the highest quality.

2. Starting Price and Average Hammer Price: The current starting price is 60 euros, and the average hammer price in previous auctions is 249.3 euros. This suggests that, in general, coins of this reference tend to sell for significantly higher prices than their starting price.

3. Sales History: The coin has been auctioned 40 times, of which it has sold 33 times. This indicates good demand and a history of successful sales.

4. Previous Prices: By looking at previous hammer prices for coins with similar conditions, we can see significant variations. For example, a coin with a condition of 70 sold for 85 euros, while one with a condition of 95 reached 400 euros.

5. Recent Trends: In the most recent auctions, hammer prices have been quite high, suggesting that interest in this coin may be increasing.

Based on these factors, an estimated maximum purchase price could be in the range of 200 to 300 euros, considering that the condition of 75 is a limiting factor, but the sales history and average hammer price are quite high.

Therefore, a reasonable maximum purchase price could be 250 euros.

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

1. Current Condition: The coin has a condition rating of 75 (MBC), indicating that it is in quite good shape. This generally translates to a higher price compared to coins with lower conditions.

2. Auction History:
- The average hammer price for coins of this reference is 76.63 euros.
- In previous auctions, hammer prices have varied, but there are examples of sales reaching up to 95 euros (as in the 2024 auction).

3. Price Trends:
- The coin has been auctioned 9 times, of which 8 have sold. This indicates good demand.
- The current starting price is 30 euros, which is reasonable compared to the average hammer price.

4. Comparison with Previous Prices:
- In previous auctions, the hammer price has been 80 euros (2020) and 85 euros (2019 and 2023), suggesting that the hammer price may be in a similar or higher range.

Based on these factors, an estimated maximum purchase price could be in the range of 80 to 95 euros, considering that the coin's condition is good and there has been interest in previous auctions.

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