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

1. Current Condition: The coin has a condition rating of 90 (EF), indicating that it is in good shape. This generally increases its value compared to coins with lower conditions.

2. Auction History:
- The coin has been auctioned 24 times, of which it has sold 19 times. This suggests there is consistent interest in the coin.
- The average hammer price in previous auctions is 31.89 euros, which can serve as a good indicator of market value.

3. Previous Prices:
- In past auctions, hammer prices for coins with a similar condition (90) have varied. For example, in 2020, a coin with a condition of 90 sold for 18 euros, while another with a condition of 95 sold for 60 euros.
- The highest hammer price for a coin with a condition of 90 was 34 euros in 2022.

4. Starting Price and Estimates:
- The current starting price is 25 euros, which is relatively low compared to previous hammer prices.
- The average starting price in previous auctions is 31.21 euros, suggesting that the current starting price could be attractive to buyers.

Based on these factors, an estimated maximum purchase price could be between 35 and 45 euros. This is based on the historical interest in the coin, its good condition, and previous hammer prices. However, since the market can be volatile, it is advisable to keep an eye on the auction and the competition.

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

1. Condition: The coin has a condition rating of 95 (EF+), indicating that it is in very good shape. This generally increases its value compared to coins with lower conditions.

2. Auction History:
- The average hammer price in previous auctions is 27.64 euros.
- In past auctions, starting and estimated prices have varied, but the highest hammer prices for coins with similar conditions have reached up to 110 euros (in 2020 and 2018).

3. Price Trends:
- The coin has a starting price of 18 euros in the current auction, which is lower than the average starting price of 29 euros in previous auctions.
- The hammer price trend for coins of similar condition suggests that the price could be in the range of 60 to 110 euros, depending on demand in the auction.

4. Number of Auctions: The coin has been auctioned 19 times, with a 63% sell-through rate, indicating consistent interest in the coin.

Based on these factors, an estimated maximum purchase price could be in the range of 60 to 80 euros. This is based on the good condition of the coin and the hammer price history in previous auctions. However, it is important to note that the final price may vary depending on competition in the auction and current demand.

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 shape. This generally translates to a higher price compared to coins with lower conditions.

2. Auction History: By looking at previous hammer prices for coins with similar conditions, we can see that:
- In past auctions, coins with a condition of 95 have reached hammer prices of up to 105 euros (as seen in the auction on September 19, 2018).
- There are also examples of coins with a condition of 100 that have sold for 270 euros (auction on April 24, 2018), indicating that the market can be quite variable.

3. Average Hammer Price: The average hammer price for this coin is 47.44 euros, but given the high condition, we can expect the actual hammer price to be above this average.

4. Starting Price and Estimates: The starting price is 20 euros, and the average starting price is 52.53 euros. This suggests that the hammer price could be in a higher range, especially considering the high condition.

5. Market Trends: Since the coin will be auctioned in the coming days and has a history of successful sales, it is reasonable to assume that interest could be high.

Based on these factors, an estimated maximum purchase price could be between 80 and 120 euros, considering the high condition and the precedents of successful sales in that range. A price of 100 euros could be a reasonable target, given the auction history and the 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 of 90 (EF), which indicates that it is in good shape. This generally translates to a higher price compared to coins in lower conditions.

2. Previous Prices: By looking at previous auction prices for coins with similar conditions, we can see that:
- In 2020, a coin with a condition of 85 was auctioned for 90 euros.
- In 2022, a coin with a condition of 85 was auctioned for 95 euros.
- In 2023, a coin with a condition of 90 was auctioned for 110 euros.

3. Average Auction Price: The average auction price for this coin is 111.76 euros, suggesting that the market is willing to pay close to this amount for coins in similar conditions.

4. Starting Price: The starting price is 90 euros, which may influence the perception of the coin's value.

5. Auction Trends: The coin has been auctioned 28 times, of which 22 have sold. This indicates a consistent interest in the coin, which may increase its value.

Taking all these factors into account, an estimated maximum purchase price for this coin could be between 120 and 140 euros. This is based on the current condition, previous auction prices, and general interest in the coin.

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 90 (EF), indicating that it is in good shape. This generally increases its value compared to coins with lower conditions.

2. Auction History:
- The average hammer price for similar coins in the past is 84.35 euros.
- The coin has been auctioned 26 times, of which it has sold 20 times, indicating good demand.
- Previous hammer prices for coins with similar conditions (95) have reached up to 520 euros, although this may be an exceptional case.

3. Starting Price and Average Starting Price:
- The current starting price is 30 euros, which is quite low compared to the average starting price of 53.77 euros.

4. Price Trends:
- In previous auctions, hammer prices have varied, but there are examples where coins with similar conditions have reached hammer prices of 90 euros or more.

Based on these factors, an estimated maximum purchase price could be in the range of 80 to 120 euros, considering that the condition is good and that the price history suggests it could reach a higher value at auction.

Therefore, a reasonable estimated maximum purchase price could be 100 euros.

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

1. Condition of the coin: The coin to be auctioned has a condition of 90 (EBC), 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 coins of this reference is 21.8 euros.
- In the past, coins with similar conditions have been auctioned, and the highest recorded hammer price was 95 euros (in 2014, with unspecified condition).
- The most recent auction with a condition of 95 reached a hammer price of 65 euros.

3. Starting price and previous prices:
- The current starting price is 30 euros, which is significantly higher than the average starting price of 12.94 euros. This may indicate an expectation of greater interest in this auction.
- The coin has been sold in the past at prices that varied, but the range seems to be between 5 and 95 euros, depending on the condition and market interest.

4. Market trends: Given that the coin has a condition of 90 and considering the interest in recent auctions, it is reasonable to assume that the hammer price could be above the historical average.

Based on these factors, an estimated maximum purchase price for this coin could be between 50 and 70 euros, considering that the condition is good and there is growing interest in the auction. However, given the starting price of 30 euros, it is possible that the final hammer price may not reach the estimated maximum, but it is a reasonable range to consider.

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 (MS+), 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 in previous auctions is 18.75 euros.
- The last auction where a coin with a similar condition (80) was sold was in 2024, where the starting price was 10 euros, but no hammer price was reported.
- In previous auctions, hammer prices have varied, but there are examples of hammer prices reaching up to 60 euros for coins in better condition.

3. Starting Price and Estimates:
- The current starting price is 18 euros, which is a good indicator of the auctioneers' expectations.
- The estimated price for this auction is 25 euros, suggesting that there is an expectation for the coin to sell for a higher price than the starting bid.

4. Sales Trends: The coin has been sold in 69% of the auctions it has participated in, indicating good demand.

Taking all these factors into account, an estimated maximum purchase price could be around 30-35 euros. This is based on the history of hammer prices, the condition of the coin, and the expectations of the current auction.

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

1. Condition: The coin has a condition of 95 (S/C-), indicating that it is in very good shape. This generally increases its value compared to coins with lower conditions.

2. Previous Prices:
- In the 2020 auction, the coin sold for 6 euros with a condition of 90.
- In the 2014 auction, the final price was 9 euros, although the condition is not specified.

3. Starting Prices and Average Prices:
- The current starting price is 18 euros, which is significantly higher than previous final prices.
- The average starting price is 11 euros, and the average final price is 7.5 euros.

4. Supply and Demand: The coin has been auctioned twice in the past and sold both times, indicating interest in the coin.

Given that the current condition is better than previous ones and considering the starting price, an estimated maximum purchase price could be between the starting price and the previous average final price.

Taking all these factors into account, an estimated maximum purchase price could be approximately 12 to 15 euros. This reflects interest in the coin, its good condition, and the price history, without reaching the current starting price, which may be a bit high compared to previous final prices.

To estimate a maximum purchase price for the coin in question, let's consider several factors:

1. Current starting price: 5500 euros.
2. Coin condition: 100 (S/C), indicating it is in excellent condition.
3. Auction history:
- In 2016, the coin was auctioned with a starting price of 1500 euros and sold for 3800 euros.
- In 2023, the coin was auctioned with a starting price of 4000 euros, with an estimated price of 6000 euros, but it did not sell.

4. Average hammer price: 3800 euros, which is an important data point for understanding market value.

5. Auction trends: The coin has seen an increase in its starting price at recent auctions, suggesting growing interest.

Given that the condition is excellent and considering the current starting price of 5500 euros, which is higher than previous hammer prices, we could estimate that the maximum purchase price could be in a range above the starting price, but not too far from the average hammer price.

Taking all these factors into account, an estimated maximum purchase price could be between 6000 and 7000 euros, given the growing interest and the excellent condition of the coin. This would allow a buyer to be willing to pay a bit more than the starting price, but it would also reflect the risk that the coin may not sell at the expected price.

To estimate a maximum purchase price for the coin in question, let's consider several factors:

1. Current starting price: 5500 euros.
2. Coin condition: 95 (S/C-), indicating it is in very good condition.
3. Auction history:
- In 2020, the coin was auctioned with a starting price of 4000 euros and sold for 6000 euros, with a condition of 100.
- In 2024, it was auctioned with a starting price of 3000 euros and sold for 3000 euros, with a condition of 95.

4. Average hammer price: 4500 euros, which is a good indicator of market value.

Given that the current coin has a condition of 95, similar to the 2024 auction, but with a higher starting price, we can infer that the hammer price could be in a similar range or slightly higher than that of the previous auction.

Considering the starting price of 5500 euros and the auction price history, an estimated maximum purchase price could be between 6000 and 6500 euros, given that the condition is good and the interest in the coin seems to be solid.

Therefore, an estimated maximum purchase price could be 6500 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 95 (EF+), indicating that it is in very good shape. This generally increases its value compared to coins with lower conditions.

2. Auction history:
- The average starting price in previous auctions is 21.3 euros, and the average hammer price is 13.5 euros.
- In past auctions, hammer prices have varied, but there are examples of sales reaching up to 24 euros (in a 2017 auction).

3. Sales trends: Of the 9 times it has been auctioned, it has sold 4 times, indicating moderate interest in the coin.

4. Current starting price: The starting price is 6 euros, which is relatively low compared to the average starting price of previous auctions.

Given that the coin is in good condition and considering previous hammer prices, an estimated maximum purchase price could be in the range of 20 to 30 euros. This is based on the fact that the highest hammer price in the past was 24 euros and the average hammer price is 13.5 euros, but given the condition, it can be expected that the hammer price will be higher in this auction.

Therefore, an estimated maximum purchase price could be 25 euros.

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

1. Condition: The coin has a condition rating of 95 (S/C-), indicating that it is in very good shape. This generally increases its value compared to coins with lower conditions.

2. Auction history:
- The average hammer price for coins with a similar condition (95) has been between 20 to 25 euros in several previous auctions.
- In the most recent auction, a coin with the same condition sold for 120 euros, indicating a potential for high demand.

3. Starting price and previous prices:
- The current starting price is 18 euros, which is reasonable given the history of starting and hammer prices.
- The average hammer price in the past has been 24.42 euros, suggesting that the hammer price could be in a similar range.

4. Auction trends: The coin has been auctioned 17 times, of which 12 have sold. This indicates a consistent interest in the coin, which may influence the price.

Based on these factors, an estimated maximum purchase price could be between 25 and 30 euros, considering that the condition is high and there is a price history that supports this estimate. However, given the interest in the coin and the highest recorded hammer price, a maximum purchase price of up to 35 euros could be reasonable if one seeks to secure the acquisition.

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

1. Condition: The coin has a condition rating of 95 (S/C-), indicating that it is in very good shape. This generally increases its value compared to coins with lower conditions.

2. Previous auction prices: By looking at previous hammer prices, we can see that the coin has reached hammer prices of up to 5000 euros in past auctions, with an average hammer price of 4140 euros.

3. Starting price and estimates: The current starting price is 3000 euros, which is below the average hammer price. This suggests that there is potential for the hammer price to be higher.

4. Auction trends: The coin has been auctioned 13 times, of which 10 have been sold. This indicates a consistent interest in the coin, which may influence the hammer price.

5. Recent auction prices: In the most recent auctions, hammer prices have varied, but they have been in the range of 3200 to 4000 euros for coins of similar condition.

Taking all these factors into account, an estimated maximum purchase price could be around 4500 euros. This price reflects both the condition of the coin and the price trends in previous auctions.

To estimate a maximum purchase price for the coin in question, let's consider several factors:

1. Starting Price: 12,000 euros. This is the initial price of the auction.
2. Auction History: The coin has been auctioned 3 times in the past and has sold on all occasions, indicating a consistent interest in the coin.
3. Average Starting and Hammer Price: The average starting price is 14,666.67 euros and the average hammer price is 18,300 euros. This suggests that, in general, coins of this reference tend to sell for above the starting price.
4. Condition: The coin has a condition rating of 95 (S/C-), which is quite high and may positively influence its value.
5. Previous Prices: In previous auctions, the hammer prices have been 22,100 euros (2015) and 20,000 euros (2021), indicating that the value of the coin has been quite high in the past.

Given that the current starting price is 12,000 euros and considering the history of hammer prices, as well as the condition of the coin, an estimated maximum purchase price could be in the range of 18,000 to 22,000 euros. This is based on the fact that the most recent hammer price was 12,800 euros, but the interest and condition suggest it could reach a higher price.

Therefore, a reasonable estimated maximum purchase price could be 20,000 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 95 (S/C-), indicating that it is in very good shape. This generally increases its value compared to coins with lower conditions.

2. Auction history:
- The average hammer price in previous auctions is 26.38 euros.
- The last auction with a similar condition (95) had a hammer price that has not been specified, but the starting price was 15 euros and the estimated price was 25 euros.
- In previous auctions, coins with a condition of 100 have sold for up to 75 euros.

3. Starting price and estimates:
- The current starting price is 20 euros, which is a good starting point.
- The average starting price in the past has been 16.15 euros, suggesting that the current starting price is reasonable.

4. Sales trends: Out of the 19 times it has been auctioned, 14 have been sold, indicating good demand.

Taking all these factors into account, an estimated maximum purchase price could be in the range of 40 to 60 euros. This is based on the good condition of the coin and the hammer price history in previous auctions. A price of 50 euros could be a reasonable target, as it falls in the middle of this range and reflects the quality of the coin.

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

1. Condition: The coin has a condition rating of 90 (EF), indicating that it is in very good shape. This generally increases its value compared to coins with lower conditions.

2. Auction History:
- The coin has been auctioned 6 times in the past, of which it has sold 4 times. This suggests that there is interest in the coin.
- The average hammer price in previous auctions is 49 euros, which can serve as a good indicator of market value.

3. Previous Starting and Hammer Prices:
- In previous auctions, starting prices have varied, but the highest recorded hammer price is 135 euros (in 2014), although the condition of that coin is not specified.
- The most recent auction (2023) shows a hammer price of 20 euros for a coin with a condition of 100, indicating that the price can vary significantly based on condition.

4. Current Starting Price: The starting price is 40 euros, which is reasonable given the price history.

Based on these factors, an estimated maximum purchase price could be positioned between the average hammer price (49 euros) and a bit more, considering the good condition of the coin.

Therefore, a reasonable maximum purchase price could be 60 euros. This allows for some margin for competition in the auction, given that the condition is high and there is a history of interest in the coin.