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 starting price.

1. Current starting price: 350 euros.
2. Auction price history:
- Previous auction prices varied significantly, but there are some standout auction prices:
- 650 euros (2019-05-23, condition 95)
- 480 euros (2018-10-17, condition 100)
- 450 euros (2019-12-11, condition 95)
- 350 euros (2019-10-17, condition 95)
- 270 euros (2019-10-17, condition 95)
- 220 euros (2022-10-19, condition 90)
- 260 euros (2023-03-16, condition 95)
- 280 euros (2023-03-01, condition 95)

3. Condition analysis: The condition of the current coin is not specified, which complicates the estimation somewhat. However, by observing the auction prices of coins with high conditions (95 and 100), we can infer that the auction price could be significantly higher if the condition is good.

4. Maximum purchase price estimation:
- Given that the starting price is 350 euros and considering that in the past auction prices have reached up to 650 euros for high-condition coins, a reasonable maximum purchase price could be in the range of 400 to 500 euros, assuming the coin has an acceptable condition.

Therefore, an estimated maximum purchase price could be approximately 500 euros. This is based on the auction price history and the current starting price.

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 80 (MS+), indicating that it is in fairly good shape, but not the best possible condition.

2. Auction History:
- The average hammer price for similar coins has been 1136.93 euros.
- In previous auctions, coins with a similar condition (80) have reached hammer prices that vary, but some examples are:
- 700 euros (2021-03-18)
- 900 euros (2021-02-18)
- 950 euros (2023-02-16)
- 900 euros (2023-03-16)
- The trend shows that, although there are variations, the hammer prices for similar conditions have been in a range of 700 to 950 euros.

3. Starting Price and Average Starting Price:
- The current starting price is 500 euros, which is below the average starting price of 632.35 euros. This suggests that there is potential for the hammer price to be higher.

4. Demand and Supply: Since there are no auctions scheduled in the coming days, this could increase competition among bidders, which could drive up the hammer price.

Based on these factors, an estimated maximum purchase price could be in the range of 900 to 1200 euros, considering that the average hammer price has been 1136.93 euros and that the condition of the coin is good.

Therefore, a reasonable maximum purchase price could be approximately 1100 euros. This allows for some margin for competition in the auction, while also staying within the limits of what has been seen in the past for coins of similar condition.

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 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. Previous Prices: By looking at previous auction prices for coins with similar conditions (around 80-85), we can see that auction prices have varied, but generally, they have exceeded the starting price on many occasions. For example:
- In 2020, a coin with a condition of 85 was auctioned for 380 euros with a starting price of 250 euros.
- In 2021, a coin with a condition of 80 was auctioned for 700 euros.

3. Average Auction Price: The average auction price for this coin is 498.94 euros, suggesting that, in general, buyers are willing to pay close to this price.

4. Starting Price: The starting price is 400 euros, which is a good starting point, but since the average auction price is significantly higher, this suggests there is potential for a higher auction price.

5. Auction Trends: The coin has been auctioned 19 times, with a sell-through rate of 94.74% (18 out of 19), indicating consistent interest in this coin.

Based on these factors, an estimated maximum purchase price could be in the range of 600 to 700 euros, considering that the condition is good and that previous auction prices have exceeded 600 euros on occasions. Therefore, a reasonable maximum purchase price could be 650 euros.

To estimate a maximum purchase price for the coin in question, we can analyze the provided data, including the starting and hammer prices from previous auctions, as well as the condition of the coin.

1. Current starting price: 400 euros.
2. Average hammer price in the past: 305.67 euros.
3. Previous hammer prices:
- The most recent auction shows a hammer price of 550 euros with a starting price of 400 euros.
- Other recent hammer prices have ranged from 300 to 360 euros.

4. Condition: No information is provided about the condition of this coin, which may complicate the estimation. However, by observing the hammer prices of coins with similar conditions (around 80-95), we can infer that the price could be in a higher range if the condition is good.

5. Price trends: In previous auctions, hammer prices have varied, but there has been an increase in hammer prices in recent years, suggesting an upward trend.

### Estimation of the maximum purchase price:
Given that the starting price is 400 euros and considering that recent auctions have reached hammer prices of up to 550 euros, a reasonable maximum purchase price could be in the range of 500 to 600 euros, assuming the coin has an acceptable condition and that interest in it remains.

Estimated maximum purchase price: 550 euros.

To estimate a maximum purchase price for the coin that will be auctioned, we can analyze the provided data, including the starting and hammer prices of previous auctions, as well as the condition of the coin.

1. Current starting price: 400 euros.
2. Average starting price in the past: 228.13 euros.
3. Average hammer price in the past: 306.18 euros.
4. Hammer price history: Hammer prices have varied, with a maximum of 650 euros in 2020 for a coin in condition 95.

### Analysis of previous prices:
- The coin has had a maximum hammer price of 650 euros and a starting price of 300 euros in previous auctions.
- The condition of the coins auctioned in the past varied, and although we do not have specific information about the condition of the current coin, the highest hammer prices correspond to coins in conditions 95 and 90.

### Maximum price estimation:
Given that the starting price is 400 euros and considering that the average hammer price is 306.18 euros, we can assume that the hammer price could be in a range above the average price, especially if the coin is in good condition.

- Range of previous hammer prices:
- If we take into account the highest hammer price (650 euros) and the current starting price (400 euros), we can estimate that a reasonable hammer price could be between 400 and 600 euros, depending on demand and condition.

### Conclusion:
An estimated maximum purchase price for this coin could be 600 euros. This price considers the auction history, the current starting price, and the possibility that the coin is in good condition, although it is not specified.

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

1. Current condition: The coin has a condition rating of 30 (BC+), indicating that it is in a fairly deteriorated state. This will negatively affect its value compared to coins in better condition.

2. Auction history: The coin has been auctioned previously with an estimated price of 2000 euros and a hammer price of 1360 euros in a condition of 75. This suggests that the value could be significantly higher in better conditions.

3. Average hammer price: The average hammer price for this coin in the past has been 1080 euros, providing an additional reference point.

4. Starting price: The current starting price is 150 euros, indicating that the seller is looking for a low initial price, possibly to attract more bidders.

Given that the current condition is quite low (30), and considering the price history, a reasonable maximum purchase price could be in the range of 300 to 400 euros. This is based on the fact that, although the previous hammer price was 1360 euros, the current condition of the coin significantly limits its value.

Therefore, an estimated maximum purchase price could be 350 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 condition of the coin.

1. Starting price: 300 euros.
2. Average auction price: 121.29 euros.
3. Auction price history:
- Previous auction prices varied significantly, with some reaching up to 390 euros in the case of unspecified condition.
- Most auction prices ranged between 40 and 300 euros, depending on the condition.

4. Condition: No information is provided about the current condition of the coin, making the estimation more complicated. However, by observing the auction prices of coins with similar conditions (around 70-90), we can infer that the price could be in a mid-range.

5. Analysis of previous prices:
- The coin has had successful auctions in the past, with prices ranging from 35 to 390 euros.
- The trend shows that coins with conditions of 70 to 90 have reached auction prices between 60 and 300 euros.

Given that there is no information about the current condition, and considering the starting price of 300 euros, an estimated maximum purchase price could be in the range of 200 to 300 euros, depending on demand and collector interest at the time of the auction.

Maximum purchase estimate: 250 euros. This is based on the analysis of previous prices and the lack of information about the current condition.

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 80 (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 coin has been auctioned 8 times and has sold on all occasions, indicating consistent demand.
- The average hammer price in the past is 320.63 euros, suggesting that buyers are willing to pay above the starting price in most cases.
- In the most recent auction (2022), the coin sold for 550 euros, indicating that, despite variability, there is potential for high prices.

3. Starting Price and Average Hammer Price:
- The current starting price is 250 euros, which is higher than the average starting price of 175 euros in previous auctions. This may indicate that the seller is confident that the coin will reach a higher price.
- Given that the average hammer price is 320.63 euros, this can serve as a benchmark for the estimated price.

4. Price Trends:
- Observing previous hammer prices, there is a trend for hammer prices to exceed the starting price, especially for coins in good condition.

Based on these factors, an estimated maximum purchase price could be in the range of 400 to 600 euros, considering that the last auction reached 550 euros and that the coin's condition is good. A price of 500 euros could be a reasonable target, as it falls in the middle of this range and reflects both demand and the quality of the coin.

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

1. Starting Price: 200 euros.
2. Condition: The coin has a condition rating of 90 (XF - Extremely Fine), indicating that it is in very good shape. This generally increases its value compared to coins in lower conditions.
3. Auction History: It has been auctioned once in the past and sold on that occasion, suggesting that there is interest in the coin. The average hammer price in the past was 800 euros, which is an important indicator of market value.
4. Demand: Since there are no records of it not selling in the past, this suggests that there is a steady demand for this coin.

Given that the average hammer price is significantly higher than the starting price, and considering the good condition of the coin, an estimated maximum purchase price could be in the range of 800 to 1000 euros, depending on the competition in the auction and the interest from other buyers.

Therefore, an estimated maximum purchase price could be around 900 euros.

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

1. Starting price: 350 euros.
2. Average hammer price in the past: 800 euros. This indicates that, in the only previous auction, the coin sold for a significantly higher price than its starting price.
3. Condition of the coin: 85 (ebc-), which is a good condition, potentially increasing its value compared to lower-quality coins.
4. Auction history: The coin has been auctioned once and sold on that occasion, suggesting there is interest in the coin.

Given that the average hammer price was 800 euros and considering that the condition is good, an estimated maximum purchase price could be in the range of 800 to 1000 euros, depending on the demand in the current auction and the competition among bidders.

Therefore, an estimated maximum purchase price could be approximately 900 euros.

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

1. Starting price: 300 euros.
2. Condition: The coin has a condition rating of 90 (EF), indicating that it is in very good shape.
3. Auction history: The coin has been auctioned 3 times and has sold on all occasions, suggesting a steady demand.
4. Average hammer price: 466.67 euros, which is significantly higher than the current starting price.
5. Previous prices: In past auctions, hammer prices have varied, but the last hammer price was 320 euros, which is a good indicator of its market value.

Given that the condition is high and the average hammer price is considerably above the starting price, it can be estimated that the maximum purchase price could be in a higher range than the starting price.

Taking all these factors into account, an estimated maximum purchase price could be between 400 and 500 euros, considering that the average hammer price has been 466.67 euros and that the condition of the coin is quite good.

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

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

2. Historical Prices: By looking at previous auction prices for coins with similar conditions, we can see that prices have varied. For example, in past auctions, coins with condition ratings of 90 and 95 have reached hammer prices of up to 500 euros.

3. Starting Price and Average Hammer Price: The current starting price is 500 euros, and the average hammer price for this coin is 194.8 euros. However, given the high condition, it is reasonable to expect that the hammer price will be above the average.

4. Recent Trends: In the most recent auctions, we have seen hammer prices reaching up to 650 euros for coins of similar condition.

Based on these factors, an estimated maximum purchase price for this coin could be between 500 and 700 euros, considering that the condition is high and there is interest in quality coins. A more conservative price could be around 600 euros, while a more optimistic price could reach 700 euros.

Therefore, a reasonable estimated maximum purchase price would be 650 euros.

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

1. Current Condition: The coin has a condition of 90 (XF), which indicates that it is in quite good shape. This generally translates to a higher price compared to coins in lower conditions.

2. Historical Prices: By looking at previous auction prices for coins with similar conditions, we can see that:
- In 2018, a coin with a condition of 95 sold for 1700 euros.
- In 2019, a coin with a condition of 90 sold for 650 euros.
- In 2022, a coin with a condition of 85 sold for 400 euros.

3. Starting Price and Average Hammer Price: The current starting price is 300 euros, and the average hammer price in the past has been 284.88 euros. This suggests that the starting price is reasonable, but it also indicates that the hammer price may be lower than the starting price.

4. Sales Trends: The coin has sold in 33 out of the last 36 auctions, indicating good demand.

Based on these factors, an estimated maximum purchase price could be in the range of 600 to 800 euros, considering that the condition is good and there are precedents for sales at higher prices for coins in similar conditions. However, since the starting price is 300 euros, it is likely that the hammer price will not significantly exceed this value unless there is strong competition in the auction.

Therefore, a reasonable maximum purchase price could be 700 euros.

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

1. Current Condition: The coin is in a condition of 90 (EF), which indicates that it is in quite good shape. This generally translates to a higher price compared to coins in lower conditions.

2. Starting Price and Previous Prices: The current starting price is 700 euros, and the average hammer price in previous auctions is 707.62 euros. This suggests that the starting price is reasonable and that there is a good chance it will sell for a similar or higher price.

3. Sales History: The coin has been auctioned 45 times, of which 42 have resulted in sales. This indicates a consistent interest in the coin, which can positively influence its price.

4. Previous Hammer Prices: Looking at previous hammer prices, there are examples of sales that have reached significantly higher prices, especially in similar conditions. For instance, in 2011, a coin with a condition of 90 sold for 1200 euros.

5. Recent Trends: In recent auctions, hammer prices have varied, but there are examples of similar coins that have sold for prices exceeding 1000 euros.

Based on these factors, an estimated maximum purchase price for this coin could be between 1000 and 1200 euros, considering its good condition and the demonstrated interest in previous auctions. However, since the starting price is 700 euros, it is likely that buyers will be willing to bid beyond this price, especially if there is competition in the auction.

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 90 (EF), indicating that it is in quite good shape. This generally translates to a higher price compared to coins in lower condition.

2. Auction History:
- The average hammer price for similar coins in the past is €2380.79.
- The coin has been auctioned 36 times, of which it has sold 26 times, indicating good demand.
- Previous hammer prices for coins with a condition rating of 90 have reached up to €5194.72.

3. Starting Price: The current starting price is €400, which is significantly lower than the average hammer price.

4. Price Trends: Observing the hammer prices of coins with similar conditions, it can be seen that prices have fluctuated, but generally, coins in good condition tend to reach higher prices.

Based on these factors, an estimated maximum purchase price could be in the range of €2000 to €3000, considering that the average hammer price is €2380.79 and that the coin's condition is good. However, given the history of higher hammer prices, a maximum purchase price could reasonably be estimated at €3000.