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

1. Current starting price: 250 euros.
2. Current condition: 75 (MBC).
3. Auction history:
- In 2015, it was auctioned with a starting price of 1800 euros and sold for 1950 euros.
- In 2021, it was auctioned with an estimated price of 500 euros and sold for 550 euros (condition 80).
- In 2022, it was auctioned with a starting price of 400 euros and sold for 700 euros (condition 85).

4. Average prices:
- Average starting price: 816.67 euros.
- Average selling price: 870 euros.

### Analysis

- The current condition of the coin (75) is lower than the conditions of the coins auctioned in 2021 (80) and 2022 (85), suggesting that its value may be lower than the selling prices of those auctions.
- However, the selling price of 1950 euros in 2015 is a significant data point, although the condition of that coin is not specified.
- The average selling price of 870 euros indicates that, in general, coins of this reference tend to sell for higher prices than the current starting price.

### Estimation

Given that the condition of the current coin is 75, which is lower than the conditions of previous auctions, and considering the average selling price, an estimated maximum purchase price could be in the range of 500 to 700 euros. This is based on the fact that the coin has a starting price of 250 euros, but its value could be considerably higher due to its auction history.

Estimated maximum purchase price: 650 euros.

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

1. Condition: The coin has a condition rating of 80 (MBC+), which indicates that it is in relatively good shape. This generally translates to a higher price compared to coins with lower conditions.

2. Auction history:
- The average hammer price for similar coins has been 166.69 euros.
- In previous auctions, coins with a similar condition (80) have had hammer prices that varied, but some examples are:
- 2020-11-10: 60 euros
- 2020-09-17: 75 euros
- 2018-10-16: 65 euros
- 2022-03-10: 65 euros
- 2022-10-19: 340 euros (a notably high price, but it may be an exceptional case).

3. Starting price and average starting price:
- The current starting price is 70 euros, and the average starting price in the past has been 105.95 euros.

4. Sales trends: The coin has been auctioned 60 times, of which 55 have been successful sales, indicating good demand.

Based on these factors, an estimated maximum purchase price could be in a range that considers the average hammer price and the price history of coins with similar conditions.

Given that the average hammer price is 166.69 euros and considering that the condition is 80, a reasonable maximum purchase price could be in the range of 150 to 200 euros. This allows for competition in the auction and the possibility that other bidders may also be interested in the coin.

Therefore, an estimated maximum purchase price could be 180 euros.

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 95 (EBC+), indicating that it is in very good condition. This generally translates to a higher price compared to coins with lower conditions.

2. Previous Auction Prices: By observing the auction prices of coins with a similar condition (95), we can see that they have reached auction prices of up to 650 euros in the past (as seen in the auction on 2021-12-16).

3. Average Auction Price: The average auction price for this coin is 116.27 euros, but given the high condition, we can expect the auction price to be above this average.

4. Starting Price and Recent Auction Prices: The current starting price is 225 euros, suggesting that the seller has expectations of a higher auction price. Additionally, the average starting price of 80.21 euros and the number of times it has been sold (63) indicate that there is consistent interest in this coin.

5. Auction Trends: Since it has been auctioned 81 times and sold 63 times, there is a good conversion rate, suggesting that there is demand for this coin.

Based on these factors, an estimated maximum purchase price could be in the range of 300 to 400 euros, considering that the condition is high and there are precedents for higher auction prices in the past. However, given the starting price of 225 euros, it is likely that buyers will be willing to bid more, especially if there is interest in the auction.

Therefore, a reasonable maximum purchase price could be 350 euros.

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 80 (MBC+). This is an important factor, as coins in better condition tend to reach higher prices.

2. Historical Prices: By looking at previous auction prices for coins with similar conditions, we can see that:
- In 2011, a coin with a condition of 90 sold for 750 and 1900 euros.
- In 2012, a coin with a condition of 85 sold for 2700 euros.
- In 2014, a coin with a condition of 90 sold for 18215.46 euros.
- In 2016, a coin with a condition of 80 sold for 337.74 euros.

3. Average Auction Price: The average auction price for this coin is 1395.09 euros, indicating that, in general, coins of this reference tend to sell for relatively high prices.

4. Starting Price: The current starting price is 300 euros, which may indicate a low initial price compared to previous auction prices.

5. Sales Trends: The coin has been auctioned 37 times, of which it has sold 28 times. This suggests that there is a consistent interest in this coin.

Based on these factors, an estimated maximum purchase price could be set in a range that considers both the average auction price and the current condition. Given that the condition is 80, which is lower than the higher conditions that have reached significantly high prices, a reasonable maximum price could be:

Estimated maximum purchase price: 800 - 1200 euros.

This range takes into account the current condition and previous auction prices, as well as the interest in the coin.

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 is an important factor, as coins in better condition tend to reach higher prices.

2. Starting Price and Average Hammer Price: The starting price is 220 euros, and the average hammer price in previous auctions is 392.75 euros. This suggests that, in general, coins of this reference tend to sell for a significantly higher price than their starting price.

3. Sales History: The coin has been auctioned 78 times, of which 72 have been sold. 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 that prices have varied. For example, in previous auctions, coins with conditions of 75 have reached hammer prices of up to 600 euros, while others with conditions of 85 have reached 1200 euros.

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

Based on these factors, an estimated maximum purchase price for this coin could be in the range of 400 to 600 euros, considering that the average hammer price is 392.75 euros and that the condition of 70 is relatively good, but not exceptional.

Therefore, a reasonable maximum purchase price could be approximately 500 euros.

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

1. Current starting price: 300 euros.
2. Coin grade: 75 (MBC), indicating a medium-good condition.
3. Auction history:
- In 2016, a coin with a grade of 75 sold for 2034.32 euros.
- In 2023, a coin with a grade of 80 had an estimated price of 1300 euros, but it did not sell.
- In 2024, a coin with a grade of 80 sold for 420 euros.

4. Average prices:
- Average starting price: 696.24 euros.
- Average hammer price: 1227.16 euros.

Given that the grade of the current coin is 75, which is lower than some coins that have sold in the past (80), it is reasonable to adjust the estimated price downward compared to previous hammer prices.

Considering the starting price of 300 euros and the price history, a maximum purchase price could be set in a range between the average hammer price and the hammer price of the coin with a grade of 75.

A conservative calculation could be:

- Average hammer price (1227.16 euros) adjusted for the grade: since the grade is 75, we could estimate 60-70% of this value, which gives us a range of approximately 736.30 to 858.01 euros.

However, since the starting price is 300 euros, a reasonable maximum purchase price could be:

Estimated maximum purchase price: 700 euros.

This price reflects a balance between the price history, the current grade, and the starting price.