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

1. Current starting price: 300 euros.
2. Average starting price in previous auctions: 233.33 euros.
3. Average hammer price in previous auctions: 399.29 euros.
4. Auction history: It has been auctioned 8 times, of which it has sold 7 times, indicating good demand.
5. Previous hammer prices: The hammer prices have varied, with a maximum of 420 euros and a minimum of 175 euros.

Since there is no information about the condition of the current coin, it is difficult to make a direct comparison. However, we can observe that in previous auctions, the hammer prices have been quite variable, but overall, the average hammer price (399.29 euros) suggests that buyers are willing to pay close to this value.

### Estimation of the maximum purchase price:
- Considering the average hammer price (399.29 euros) and the fact that the starting price is 300 euros, a reasonable maximum purchase price could be in the range of 400 to 450 euros, assuming the coin has an acceptable condition and that demand remains steady.

Therefore, an estimated maximum purchase price could be approximately 420 euros. This is based on the history of hammer prices and the trend of buyers in previous auctions.

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

1. Current starting price: 300 euros.
2. Coin condition: 85 (ebc-), which is a fairly good condition, although not the best.
3. Auction history:
- In 2020, the coin was auctioned with a starting price of 600 euros and sold for 850 euros, with a condition of 95.
- In 2021, it was auctioned with an estimated price of 500 euros and sold for 400 euros, with a condition of 80.

4. Average starting and final prices: The average starting price is 450 euros and the average final price is 750 euros.

Given that the condition of the current coin (85) is lower than that of the 2020 auction (95) but higher than that of 2021 (80), we can infer that the final price should be somewhere in between the previous final prices, adjusted for condition.

### Estimation:
- The final price of the coin in 2020 was 850 euros, and in 2021 it was 400 euros.
- Since the current condition is better than that of 2021 but worse than that of 2020, we could estimate a final price in a range between 500 and 750 euros.

### Conclusion:
Taking all these factors into account, an estimated maximum purchase price for the coin could be around 600 to 700 euros. This is based on the auction history and the current condition of 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 rating of 85 (ebc-), 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 this coin in the past is 529 euros.
- In recent auctions, we have seen hammer prices that vary significantly, ranging from 220 euros to 2800 euros, depending on the condition and demand at that time.
- In particular, at the March 2023 auction, the coin was hammered at 2800 euros, suggesting that there is significant interest in high-condition coins.

3. Starting Price and Average Starting Price:
- The current starting price is 500 euros, which is above the average starting price of 285.5 euros. This may indicate that the seller is confident that the coin will reach a higher price.

4. Recent Trends: In the most recent auctions, hammer prices have been quite high, suggesting that the market is willing to pay more for coins in good condition.

Based on these factors, an estimated maximum purchase price could be in the range of 800 to 1200 euros. This range takes into account the good condition of the coin, market interest, and previous hammer prices. However, given the history of high prices, it is possible that a buyer may be willing to pay even more if there is competition in the auction.

To estimate a maximum purchase price for the coin in question, we can analyze the provided data, especially the previous auction prices and the conditions of the auctioned coins.

1. Current starting price: 500 euros.
2. Average hammer price: 225.78 euros.
3. Hammer price history:
- The coin has had hammer prices that vary significantly, ranging from 15 euros to 850 euros in previous auctions.
- The conditions of the auctioned coins in the past that have higher hammer prices (such as 850 euros) have a condition rating of 95, indicating they are of high quality.

4. Condition of the current coin: No information is provided about the condition of the coin to be auctioned, making the estimation more complicated. However, since the starting price is 500 euros, it is reasonable to assume that the coin has a condition rating that could be in the medium-high range.

5. Price trends:
- In previous auctions, hammer prices have been significantly lower than the starting prices in many cases, suggesting that buyers may not be willing to pay the full starting price.
- However, there are examples of coins that have sold for much higher prices, indicating that there is potential for a high hammer price if the coin is of high quality.

### Estimation of the maximum purchase price:
Given that the starting price is 500 euros and considering the hammer price history, a reasonable maximum purchase price could be in the range of 600 to 700 euros, assuming that the coin has an acceptable condition and there is interest in the auction.

Therefore, an estimated maximum purchase price could be approximately 650 euros. This allows for a margin for competition in the auction, but it is also based on the trend of previous hammer prices.

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

1. Current Condition: The coin has a condition rating of 80 (MS+), indicating 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 669.28 euros.
- In the past, hammer prices have varied significantly, ranging from 65 euros to over 3800 euros, depending on the condition and demand at the time of the auction.

3. Starting Price: The starting price is 500 euros, which may indicate the seller's expectations regarding the coin's value.

4. Recent Trends: In the most recent auctions, hammer prices have exceeded the starting price, suggesting that there is interest in the coin.

5. Comparison with Previous Prices:
- In previous auctions, coins with a similar condition have reached hammer prices ranging from 350 to 1500 euros, depending on demand and other factors.

Taking all these factors into account, an estimated maximum purchase price for this coin could be in the range of 800 to 1200 euros. This range considers the current condition, the auction price history, and the starting price. However, the final price will depend on the competition in the auction and the interest of collectors at that time.

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

1. Current starting price: 900 euros.
2. Coin condition: 80 (MBC+), indicating good preservation.
3. Auction history:
- It has been auctioned 6 times in the past, of which it has sold 4 times.
- The average starting price in previous auctions was 641.67 euros, and the average hammer price was 752.5 euros.
- Previous hammer prices varied, but the highest was 750 euros in 2014.

4. Previous hammer prices:
- 2018: Not sold (starting price 900, estimated 1500).
- 2014: Hammer price 750 (starting price 600, estimated 1000).
- 2013: Hammer price 460 (starting price 450, estimated 750).
- 2022: Hammer price 700 (starting price 600, estimated 1000).
- 2022: Not sold (starting price 400, estimated 650).

Given that the coin is in good condition (80) and considering the current starting price of 900 euros, which is higher than previous starting and hammer prices, it is reasonable to assume that interest in this coin could be greater in this auction.

However, it is also important to note that the average hammer price in the past has been lower than the current starting price. Therefore, an estimated maximum purchase price could be set in a range that reflects both the good condition and the price history.

Estimated maximum purchase price: It could be reasonable to consider a hammer price around 800-900 euros, given that the starting price is 900 euros and the hammer price history suggests that buyers might be willing to pay a little more, but not necessarily the full starting price.

Thus, an estimated maximum purchase price could be 850 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 of 75 (MBC), indicating that it is in an acceptable state, but not among the best qualities. This may influence the price, as coins in better condition tend to fetch higher prices.

2. Auction History:
- It has been auctioned 5 times in the past, of which it has sold 3 times. This indicates that there is interest in the coin, but also that there is a 40% chance it has not sold.
- Previous starting and final prices are relevant. For example, in 2019, the coin started at 900 euros and sold for 950 euros, suggesting that the final price may be close to the starting price in recent auctions.

3. Average Starting and Final Prices:
- The average starting price is 840 euros and the average final price is 1016.67 euros. This indicates that, in general, coins of this reference tend to sell for above their starting price.

4. Price Trends:
- The current starting price is 600 euros, which is lower than the average starting price. This could attract more bidders, but it may also indicate that the seller is looking for a quick sale.

5. Comparison with Previous Prices:
- In the most recent auction, the coin sold for 1000 euros with a condition of 70, which is lower than the current condition of 75. This suggests that the price could be higher in this auction.

Taking all these factors into account, an estimated maximum purchase price could be around 950-1100 euros, considering that the condition is better than in the previous auction and that interest in the coin seems to be moderate. A price of 1000 euros could be a reasonable target, given the auction history and the current condition.

To estimate a maximum purchase price for the coin in question, we can analyze the provided data, especially the previous auction prices and the conditions of the auctioned coins.

1. Starting and hammer price: The current starting price is 700 euros, and the average hammer price in previous auctions is 1135.53 euros. This suggests that, in general, coins of this reference tend to sell for a price higher than the starting price.

2. Auction history:
- In previous auctions, hammer prices have varied considerably, with some reaching up to 2600 euros (as in the March 2023 auction).
- The condition of the auctioned coins has influenced the hammer prices. Coins with higher conditions (such as 90 and 95) tend to achieve higher prices.

3. Current condition: In this case, there is no information about the condition of the coin to be auctioned. However, considering that previous conditions have ranged between 75 and 95, and that hammer prices have been high, we can assume that the coin could be in acceptable condition.

4. Maximum price estimation: Given that the average hammer price is 1135.53 euros and considering that some coins have reached significantly higher hammer prices, a reasonable maximum purchase price could be in the range of 1500 to 1800 euros, depending on the actual condition of the coin.

Therefore, an estimated maximum purchase price for this coin could be 1500 euros.

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 90 (EF), which indicates 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 similar coins in the past is 348.13 euros.
- The last auction of a coin with a similar condition (90) was sold for 550 euros (auction date: 2018-10-17).
- In recent auctions, hammer prices have varied, but there are examples of coins with conditions of 85 and 95 that sold for 320 and 1600 euros, respectively.

3. Starting Price: The starting price of 500 euros is a good indicator of the seller's expectations, but it does not necessarily reflect the final hammer price.

4. Market Trends: Given that the coin has been auctioned 47 times and has had a high sales percentage (44 out of 47), this suggests there is consistent interest in this coin.

Based on these factors, an estimated maximum purchase price could be in the range of 600 to 800 euros, considering that the condition is high and there are precedents for successful sales in that range. However, given the starting price of 500 euros, it is possible that the final hammer price may not significantly exceed this value unless there is active competition among bidders.

Therefore, a reasonable maximum purchase price could be 700 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 90 (XF), indicating that it is in quite good shape. This generally translates to a higher price compared to coins in lower conditions.

2. Auction History:
- The average hammer price from previous auctions is 767.86 euros, suggesting that, on average, coins of this reference sell for a considerably higher price than the starting price.
- In previous auctions, hammer prices have varied, but there are examples of sales exceeding 1000 euros, especially for coins in good condition.

3. Starting Price and Average Hammer Price:
- The current starting price is 400 euros, which is reasonable given the history of hammer prices.
- The average hammer price of 767.86 euros suggests that buyers are willing to pay more than the starting price.

4. Recent Trends: In the most recent auctions, hammer prices have been 750 euros and 900 euros for coins with similar conditions (85 and 80).

Based on these factors, an estimated maximum purchase price could be in the range of 800 to 1000 euros, considering that the condition of 90 (XF) is a positive factor and that the auction price history supports this estimate.

Therefore, a reasonable maximum purchase price could be 900 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 90 (EF), indicating that it is in good shape. This generally translates to a higher price compared to coins in lower conditions.

2. Auction History:
- The average hammer price for coins of this reference is 574.1 euros, suggesting that, in general, buyers are willing to pay significantly more than the starting price.
- In previous auctions, we have seen hammer prices vary, but some have reached very high figures, such as 1800 euros in 2022 and 800 euros in 2023.

3. Starting Price and Average Starting Price:
- The current starting price is 300 euros, which is slightly higher than the average starting price of 226.67 euros. This may indicate that the seller is confident that the coin will reach a higher price.

4. Price Trends:
- Observing previous hammer prices, there is a trend for coins in good condition (such as 90 and 95) to sell for much higher prices than their starting price.

Based on these factors, an estimated maximum purchase price could be in the range of 700 to 900 euros, considering that the coin is in good condition and that the auction history shows that prices can be quite high.

Therefore, a reasonable maximum purchase price could be 800 euros.

To estimate a maximum purchase price for the coin in question, we can analyze the provided data, especially the previous auction prices and the current condition of the coin.

1. Current Condition: The coin has a condition of 80 (VF+). This is an important factor, as coins in better condition tend to reach higher prices.

2. Previous Auction Prices: Looking at the auction prices of coins with similar conditions:
- In 2016, a coin with a condition of 85 was auctioned for 950 euros.
- In 2024, a coin with a condition of 85 was auctioned for 2000 euros.
- In 2024, a coin with a condition of 80 was auctioned for 1000 euros.

3. Price Trends: The average auction price for this coin is 669.62 euros, indicating that, in general, coins of this reference tend to sell for above their starting price.

4. Current Starting Price: The starting price is 300 euros, which is relatively low compared to previous auction prices.

5. Estimation: Given that the condition of the coin is 80 and considering the previous auction prices, a reasonable maximum purchase price could be in the range of 800 to 1200 euros, depending on the demand at the auction and the interest from collectors.

Therefore, an estimated maximum purchase price for this coin could be approximately 1000 euros.