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

1. Current starting price: 9000 euros.
2. Coin condition: 90 (EBC), indicating good preservation.
3. Auction history: It has been auctioned once in the past with a starting price of 5000 euros and an estimated price of 7000 euros, although it did not sell.
4. Average starting price: 7000 euros, suggesting that the market has valued similar coins in that range.
5. Number of times it has been auctioned in the past: Only once, which may indicate that there is little information about its demand.

Given that the current starting price is significantly higher than the average starting price and the estimated price from the previous auction, this could indicate that the seller has high expectations. However, the fact that the coin did not sell in the previous auction suggests that the market may not be willing to pay that much.

Taking all these factors into account, an estimated maximum purchase price could be set in a range between the average starting price and the current starting price. A reasonable price could be:

Estimated maximum purchase price: 8000 euros.

This price reflects good preservation and the expectation that the coin could attract interest, but it also considers the lack of previous sales and the average market price.

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

1. Starting Price: 6000 euros.
2. Condition: The coin is in a condition of 100 (S/C), indicating that it is in excellent shape. This generally increases its value.
3. Auction History:
- It has been auctioned 3 times and sold on all occasions.
- The average hammer price in previous auctions is 6416.67 euros.
- In the 2022 auction, the hammer price was 7750 euros, which is notably high compared to other hammer prices.
4. Price Trends: The estimated price for the next auction is 7000 euros, suggesting an expectation that the coin's value will remain stable or increase.

Given that the coin is in excellent condition and has a history of successful sales, the hammer price could be above the starting price. Considering the average hammer price and the highest hammer price in the past, a reasonable maximum purchase price could be in the range of 7500 to 8000 euros.

Therefore, an estimated maximum purchase price could be 8000 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 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: The starting price is 300 euros. This is an indicator of the seller's expectation regarding the coin's value.

3. Sales History: By looking at previous auction prices for coins with similar conditions (95 and 90), we can see that they have reached hammer prices that vary considerably. For example, in past auctions, coins with a condition of 95 have reached hammer prices of up to 700 euros.

4. Recent Trends: In the most recent auctions, the hammer price for coins of similar condition has been quite high, suggesting that there is growing demand.

5. Average Hammer Price: The average hammer price for this coin is 135.49 euros, but given that the condition is higher, we can expect the actual hammer price to be significantly higher.

Based on these factors, an estimated maximum purchase price could be between 500 and 700 euros, considering that the condition is high and there is a history of hammer prices that supports this estimate. However, since the starting price is 300 euros, it is likely that the actual hammer price will be closer to this upper range, depending on the competition in the auction.

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

1. Coin Condition: The coin has a condition rating of 90 (EF), 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 looking at the hammer prices of coins with similar conditions (around 80-90), we can see that the hammer prices have varied. For example, in recent auctions, coins with a condition of 80 have reached hammer prices between 54 and 95 euros.

3. Starting Price and Average Hammer Price: The current starting price is 90 euros, and the average hammer price for similar coins is 69.5 euros. However, since the condition of this coin is superior, we can expect the hammer price to be higher.

4. Auction Trends: The coin has been auctioned 110 times in the past, with a high sales percentage (104 out of 110). This suggests that there is consistent interest in this coin, which may increase its value.

5. Recent Hammer Prices: In recent auctions, we have seen hammer prices reaching up to 320 euros for coins of similar condition, although this may be an exceptional case.

Based on these factors, an estimated maximum purchase price for this coin could be between 120 and 150 euros. This is based on the condition, interest in the coin, and the hammer prices of similar coins in the past.

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

1. Condition of the coin: 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. Previous auction prices: By observing the hammer prices of coins with similar conditions (95 and close), we can see that in the past, coins with a condition of 95 have reached hammer prices of up to 700 euros (as seen in the December 2021 auction).

3. Starting price and average prices: The current starting price is 250 euros, and the average hammer price in previous auctions is 96.63 euros. However, given that the condition of this coin is high, it is reasonable to expect that the hammer price will be above the average.

4. Auction trends: The coin has been auctioned 77 times, with a high percentage of sales (72 out of 77). This suggests that there is consistent interest in this coin, which may increase its value.

5. Comparison with previous starting and hammer prices: In previous auctions, coins with a condition of 95 have had starting prices that varied, but some have reached hammer prices of 420 euros (as seen in the February 2023 auction).

Based on these factors, an estimated maximum purchase price for this coin could be between 400 and 600 euros, considering its high condition and market interest. A price of 500 euros could be a reasonable benchmark for a competitive offer.

To estimate a maximum purchase price for the coin that will be auctioned, we will consider several factors:

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

2. Starting price: The starting price is 350 euros. This is a good starting point, but not necessarily the final price.

3. Auction history:
- The average hammer price for similar coins in the past is 152.92 euros, but this can vary depending on the condition.
- In previous auctions, coins with similar conditions have reached hammer prices that varied significantly, with some reaching up to 320 euros for a condition of 85.

4. Recent trends: In the most recent auctions, hammer prices have shown an increase, especially for coins in good condition.

5. Sales expectations: Since 93.33% of the coins auctioned in the past have sold, there is a high probability that this coin will also sell.

Based on these factors, an estimated maximum purchase price could be between 400 and 500 euros, considering that the condition is high and the starting price is 350 euros. This also takes into account the possibility that bidders may be willing to pay more for a coin in such good condition.

Therefore, a reasonable maximum purchase price could be 450 euros.

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

1. Condition of the coin: The coin to be auctioned has a condition rating of 90 (EBC), indicating that it is in quite good shape. This generally translates to a higher price compared to coins with lower conditions.

2. Starting price: The starting price is 600 euros. This is the baseline for the auction.

3. Price history: By looking at previous auction prices for similar coins in comparable condition, we can see that:
- In past auctions, coins with a condition rating of 90 have reached hammer prices of up to 495 euros (in 2017) and 400 euros (in 2020).
- The overall trend shows that coins with similar conditions have had hammer prices ranging from 300 to 600 euros.

4. Average hammer price: The average hammer price for similar coins is 342.18 euros, suggesting that the hammer price may be below the starting price.

5. Auction expectations: Given that there is a scheduled auction and the coin has a starting price of 600 euros, it is likely that bidders will be willing to pay a bit more than the average hammer price, especially if demand is high.

Taking all these factors into account, an estimated maximum purchase price could be around 700-800 euros. This is based on the good condition of the coin and the potential interest from collectors, although it is important to remember that the final price will depend on the dynamics of the auction and the competition among bidders.

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 translates to a higher price compared to coins with lower conditions.

2. Starting Price: The starting price is 1500 euros, which sets a baseline for the auction.

3. Price History: By looking at previous auction prices for similar coins, we can see that prices have varied significantly. For example, in past auctions, coins with similar conditions have reached hammer prices ranging from 500 to 3600 euros, depending on demand and other factors.

4. Average Hammer Price: The average hammer price for this coin is 553.6 euros, suggesting that, in general, coins of this reference tend to sell below the starting price.

5. Recent Trends: In the most recent auctions, hammer prices have shown a trend of increasing, especially for coins in good condition.

Given all this, an estimated maximum purchase price could be in the range of 1800 to 2200 euros, considering that the condition is high and there is potential interest in the coin. However, it is important to keep in mind that the final price will depend on the competition in the auction and the specific demand at that time.

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 rating of 95 (EBC+), indicating that it is in very good condition. This generally increases its value compared to coins with lower conditions.

2. Starting price and previous prices: The starting price of the auction is 90 euros. In the past, this coin has had hammer prices that varied, but some have reached up to 140 euros under similar conditions (as seen in the auction on September 15, 2022).

3. Price trends: The average hammer price in previous auctions is 60.13 euros, but there are examples of higher hammer prices, especially for coins in similar condition.

4. Supply and demand: The coin has been auctioned 30 times, of which 26 have sold. This suggests that there is a consistent interest in this coin, which may influence the price.

5. Estimated price: In previous auctions, the estimated price has varied, but it has reached up to 100 euros under similar conditions.

Taking all these factors into account, a maximum estimated purchase price could be in the range of 120 to 140 euros, given that the condition is high and there are precedents for hammer prices in that range. However, since the starting price is 90 euros, it is advisable not to exceed this limit unless there is strong competition in the auction.

Therefore, a reasonable maximum purchase price could be 130 euros.

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

1. Condition of the coin: 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:
- The average hammer price for this coin in the past is 98.05 euros.
- It has been auctioned 29 times, of which 24 have been successful sales, indicating good demand.
- In previous auctions, hammer prices have varied, but there are examples of auctions that have reached up to 260 euros (in the case of a condition rating of 95).

3. Starting price and estimates:
- The current starting price is 110 euros, suggesting that the seller has expectations of a higher hammer price.
- The average starting price in the past has been 45.79 euros, but this may not be representative of the current situation due to the high condition of this coin.

4. Recent trends: In the most recent auctions, hammer prices have shown a trend of being higher, especially for coins in good condition.

Based on these factors, an estimated maximum purchase price could be in the range of 150 to 200 euros, considering the good condition and the history of hammer prices. However, since the starting price is 110 euros, it is likely that the hammer price will not significantly exceed this value unless there is active competition among bidders.

Therefore, a reasonable maximum purchase price could be 180 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 95 (S/C-), indicating that it is in very good shape. This generally translates to a higher price compared to coins in lower condition.

2. Auction History:
- The average hammer price in previous auctions for coins with a similar condition (95) has been 300 euros (in the December 2021 auction and on other occasions).
- In the most recent auction with a condition of 95, the hammer price was 300 euros.

3. Starting Price and Average Hammer Price:
- The current starting price is 250 euros, which is reasonable given the price history.
- The average hammer price is 250.71 euros, suggesting that the hammer price could be in a similar range.

4. Price Trends: In previous auctions, hammer prices have fluctuated, but coins in condition 95 have reached hammer prices of up to 330 euros.

Based on these factors, an estimated maximum purchase price for this coin could be around 300-330 euros, as this is a price that has been reached in previous auctions for coins in similar conditions.

Therefore, I would recommend considering a maximum purchase price of 330 euros.

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

1. Condition: The coin to be auctioned has a condition of 95 (EBC+), which indicates that it is in very 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 a similar condition (95), we can see that in previous auctions, the hammer prices have varied. For example:
- In the 2021 auction, a coin with a condition of 95 was sold for 950 euros.
- In the 2024 auction, another coin with a condition of 95 was sold for 1200 euros.

3. Average hammer price: The average hammer price of coins auctioned in the past is 787.5 euros, which can also serve as a reference.

4. Starting price: The starting price of the coin is 750 euros, indicating that the auctioneer expects considerable interest in the coin.

5. Sales trends: The coin has been auctioned 14 times, of which 12 have been sold, indicating good demand.

Based on these factors, and considering that the condition of the coin is high and that there have been recent sales at prices above 1000 euros for coins of similar condition, an estimated maximum purchase price could be between 1000 and 1200 euros.

Therefore, a reasonable maximum purchase price could be 1100 euros. This allows for a margin for competition in the auction, given the interest that a coin in such good condition may generate.

To estimate a maximum purchase price for the coin in question, let's 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:
- In the December 2021 auction, the coin was estimated at 3000 euros and sold for 2000 euros, with a condition of 95.
- In September 2022, the coin was auctioned with a starting price of 1200 euros, an estimated price of 2000 euros, and sold for 1700 euros, with a condition of 90.
- In March 2024, it was estimated at 2500 euros and sold for 2800 euros, also with a condition of 90.

3. Starting Prices and Average Prices: The current starting price is 1800 euros, and the average selling price in the past has been 2166.67 euros.

4. Price Trends: Looking at previous selling prices, there seems to be an upward trend, especially in the last auction where it sold for 2800 euros.

Based on this data, an estimated maximum purchase price could be in the range of 2500 to 3000 euros, considering that the condition is high and interest in the coin appears to be increasing. Therefore, a reasonable maximum purchase price could be 2800 euros.

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

1. Starting Price: 1800 euros.
2. Condition: The coin has a condition rating of 95 (S/C-), indicating that it is in very good shape.
3. Auction History:
- In December 2021, it was auctioned with an estimated price of 2500 euros and sold for 2200 euros.
- In September 2022, the starting price was 1500 euros, with an estimated price of 2500 euros and a final bid of 1700 euros.

4. Average Final Price: 1950 euros, which is a good indicator of market value.

Given that the coin has a history of final bids exceeding the current starting price and considering its good condition, a reasonable maximum purchase price could be in the range of previous final bid prices.

Taking all this into account, an estimated maximum purchase price could be approximately 2200 euros, which is the highest price reached in previous auctions for this condition. This would allow you to compete in the auction without exceeding the observed market value.

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

2. Previous auction prices:
- In 2021, a coin with a condition of 95 sold for 5000 euros.
- In 2022, a coin with a condition of 90 sold for 5000 euros, suggesting that condition has a significant impact on price.
- In 2024, another coin with a condition of 95 sold for 5400 euros.

3. Starting price and average hammer price: The current starting price is 4000 euros, and the average hammer price in previous auctions is 3810 euros. This suggests that the starting price is reasonable and that there is potential for the hammer price to be higher.

4. Auction trends: Since the coin has sold every time it has been auctioned, this indicates a consistent interest in the coin, which may lead to an increase in the hammer price.

Based on these factors, an estimated maximum purchase price could be between 5000 and 6000 euros, considering that the condition is high and that previous hammer prices for similar coins have been in that range. A price of 5500 euros could be a reasonable target, given the sales history and the condition of the coin.

Based on the provided data, we can conduct an analysis to estimate a maximum purchase price for the coin in question.

1. Starting price: 600 euros.
2. Condition: 85 (ebc-), indicating good condition, although not the best possible.
3. Auction history: The coin has been auctioned once before, with a hammer price of 600 euros, which matches the current starting price. This suggests that the market has valued this coin in that range.
4. Previous estimated price: In the previous auction, a price of 1000 euros was estimated, but the hammer price was 600 euros, indicating that the actual interest from buyers was lower than the estimate.

Given that the coin has a sales history at 600 euros and considering that the condition is good but not exceptional, a maximum purchase price could be in the range of 600 to 800 euros. This is because, although the previous hammer price was 600 euros, interest may have increased slightly, but not enough to reach the estimated price of 1000 euros.

Therefore, an estimated maximum purchase price could be 800 euros.

Given that the coin has a conservation of 95 (S/C-), which is a very high conservation, and considering that it is the first time it is being auctioned, the starting price is 900 euros.

In general, coins in similar conditions tend to reach hammer prices that can be significantly higher than the starting price, especially if there is interest in the auction. Without historical sales data for this specific coin, it is difficult to make an accurate estimate, but it can be considered that the hammer price could be between 1.5 and 2 times the starting price, depending on the interest of collectors.

Therefore, an estimated maximum purchase price could be in the range of 1350 to 1800 euros. However, since there is no data from previous auctions, it is advisable to pay attention to the dynamics of the auction and the interest of the bidders.

To estimate a maximum purchase price for the coin that will be auctioned, we will consider several factors:

1. Condition: The coin in question has a condition rating of 110 (FDC), indicating that it is in exceptional condition. This generally increases its value compared to coins of lower condition.

2. Starting Price: The starting price is 90 euros. This is the starting point for the auction.

3. Auction History:
- The coin has been auctioned 13 times in the past, of which it has sold 11 times. This indicates good demand.
- Previous hammer prices for coins of similar condition (95 and 90) have varied, but the highest recorded price is 50 euros in a previous auction, although this may not be representative due to the condition.

4. Price Trends: The average hammer price in previous auctions is 19.09 euros, but this includes coins of lower condition. For coins in FDC condition, a significantly higher price can be expected.

5. Previous Price Estimates: In past auctions, estimated prices for coins of similar condition have been up to 40 euros, but with the FDC condition, it is reasonable to expect the hammer price to be considerably higher.

Given all this, an estimated maximum purchase price could be between 150 and 200 euros, considering the high condition and historical demand. However, the starting price of 90 euros suggests that there could be a good buying opportunity if competition is not high.

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