To estimate a maximum purchase price for the coin in question, we can analyze the provided data, including starting prices, hammer prices, and the conditions of similar coins auctioned in the past.

1. Current starting price: 150 euros.
2. Average hammer price in the past: 123.03 euros.
3. Previous hammer prices:
- In recent auctions, hammer prices have varied significantly, reaching up to 500 euros in a March 2023 auction.
- Most hammer prices are in the range of 70 to 240 euros, depending on the condition.

4. Condition: There is no information about the condition of this coin, which may complicate the estimation. However, it can be observed that coins with higher conditions (above 80) tend to achieve higher hammer prices.

5. Price trends:
- Coins with a starting price of 150 euros have had hammer prices that vary, but generally, higher hammer prices have been seen in coins with conditions of 80 or more.
- In the case of the March 2023 auction, a coin with a starting price of 150 euros reached a hammer price of 500 euros, indicating that there is potential for a high hammer price.

### Estimation of the maximum purchase price:
Given that the starting price is 150 euros and considering that significantly higher hammer prices have been achieved in the past, a reasonable maximum purchase price could be in the range of 250 to 300 euros, assuming the coin has an acceptable condition and there is interest in the auction.

Therefore, an estimated maximum purchase price could be approximately 300 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 conditions of the auctioned coins.

1. Current starting price: 300 euros.
2. Previous auction prices:
- The highest auction was 1200 euros in 2018 with a condition of 100.
- Other relevant auction prices include 320 euros in 2023 with a condition of 95 and 260 euros in 2022 with a condition of 95.
3. Condition of the coin: No information is provided about the current condition, which makes the estimation more complicated. However, we can observe that coins with higher conditions tend to reach higher auction prices.

Given that the starting price is 300 euros and considering that significantly higher auction prices have been reached in the past, especially for coins in good condition, an estimated maximum purchase price could be in the range of 400 to 600 euros, depending on the demand and the condition of the coin in the current auction.

Therefore, an estimated maximum purchase price could be approximately 600 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 75 (MBC), indicating that it is in an acceptable state, but not of the highest quality.

2. Previous Auction Prices: By observing the auction prices of coins with similar conditions (75 and 80), we can see that:
- In several auctions, coins with a condition of 75 have reached hammer prices ranging from 60 to 90 euros.
- Coins with a condition of 80 have achieved higher hammer prices, in the range of 90 to 140 euros.

3. Average Hammer Price: The average hammer price for this coin is 73.66 euros, which also provides us with a reference.

4. Starting Price: The starting price is 200 euros, which is significantly higher than the previous hammer prices for similar conditions.

Given that the condition of the coin is 75 and considering the previous hammer prices, an estimated maximum purchase price could be in the range of 80 to 100 euros. This is based on the fact that, although the starting price is high, the actual hammer price for similar conditions has been lower.

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

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 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. Starting price: The starting price is 400 euros. This is the baseline for the auction.

3. Price history: By looking at previous auction prices for coins with a similar condition (90), we can see that they have reached significantly higher prices in the past. For example, in previous auctions, coins with a condition of 90 have reached hammer prices of up to 800 euros.

4. Average hammer price: The average hammer price for this coin is 231.8 euros, indicating that, in general, coins of this reference tend to sell for a price lower than 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.

Based on these factors, an estimated maximum purchase price for this coin could be between 600 and 800 euros, considering that the condition is high and there is a price history that supports this estimate. However, since the starting price is 400 euros, it is likely that the hammer price will not significantly exceed this range 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 has a condition rating of 90 (EF), indicating that it is in good shape. This is a positive factor that can increase its value.

2. Auction History:
- The average hammer price in previous auctions is 696.65 euros, suggesting that, in general, coins of this reference tend to sell for significantly higher prices than the starting price.
- In the past, there have been recorded auctions of this coin that reached up to 2739.49 euros (in 2011), although this may be an exceptional case.

3. Starting Price and Average Starting Price: The current starting price is 250 euros, which is relatively low compared to the average hammer price. This could indicate a good buying opportunity.

4. Sales Trends: The coin has been sold in 17 out of 19 auctions, indicating good demand.

5. Comparison with Previous Prices: Looking at previous hammer prices, especially those with a similar condition (90), the lowest hammer price was 600 euros in 2011, suggesting that a hammer price in the range of 600 to 900 euros could be reasonable.

Taking all these factors into account, an estimated maximum purchase price for this coin could be between 800 and 1000 euros. This is based on the good condition, the auction price history, and the demand observed in previous auctions.

To estimate a maximum purchase price for the coin that will be auctioned, we can consider several factors based on the provided data:

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 in lower condition.

2. Previous auction prices:
- The average hammer price for similar coins has been 281.39 euros.
- In previous auctions, coins with a condition rating of 95 have reached hammer prices that varied, but some examples are:
- 305 euros (2020-12-15)
- 400 euros (2020-07-02)
- 270 euros (2018-12-11)
- 320 euros (2023-03-16)

3. Starting price: The starting price for the current auction is 250 euros, which is a reasonable starting point.

4. Price trends: Observing the trends, it seems that coins with a similar condition have often had hammer prices that exceed the starting price, especially in high condition.

Based on these factors, an estimated maximum purchase price could be in the range of 350 to 400 euros, considering that the highest hammer price in previous auctions for coins of similar condition has been 400 euros. This also takes into account the possibility that bidders may be willing to pay a bit more for a coin in such good condition.

Therefore, an estimated maximum purchase price could be approximately 400 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. Previous Prices: By looking at previous auction prices for coins with similar conditions (EF or close), we can see that auction prices have varied. For example:
- In previous auctions, coins with a condition of 85 have sold for around 85-150 euros.
- Coins with a condition of 90 have reached auction prices of up to 270 euros.

3. Starting Price and Average Hammer Price: The current starting price is 200 euros, and the average hammer price for this coin in the past has been 86.06 euros. However, given that the condition is high, it is reasonable to expect that the hammer price will be above the average.

4. Auction Trends: The coin has been auctioned 106 times, with a sell-through rate of 91.5%. This suggests that there is consistent interest in this coin, which may increase its value at auction.

Based on these factors, an estimated maximum purchase price for this coin could be between 250 and 300 euros, considering its good condition and market interest. This would allow a competitive buyer at the auction, given the historical hammer prices for similar coins.

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

1. Current starting price: 250 euros.
2. Average starting price in previous auctions: 417.39 euros.
3. Average hammer price in previous auctions: 506.76 euros.
4. Hammer price history: Hammer prices have varied, but many have been in the range of 460 to 810 euros, with a notable hammer price of 700 euros on some occasions.

Since the condition of the current coin is not specified, but considering that in the past, coins with similar condition (condition value 95) have had hammer prices ranging between 460 and 810 euros, we can make an estimation.

### Estimation of the maximum purchase price:
- Based on the average hammer price: 506.76 euros.
- Considering the range of previous hammer prices: We could consider a maximum purchase price in the high range, given that the starting price is relatively low (250 euros).

Therefore, an estimated maximum purchase price could be between 500 and 600 euros, taking into account that the highest hammer price in the past has been 810 euros, but also considering that the current starting price is 250 euros.

### Conclusion:
Estimated maximum purchase price: 600 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 75 (MBC), indicating that it is in acceptable shape, but not in exceptional condition. This may influence the price, as coins in better condition tend to fetch higher prices.

2. Auction History:
- The average hammer price in previous auctions is 254.67 euros, suggesting that, in general, coins of this reference tend to sell close to this price.
- The most recent auction with a similar condition (75) had a hammer price of 351 euros, indicating that there is a market willing to pay more for coins in this state.

3. Starting Price: The current starting price is 250 euros, which is a good starting point. However, since the average hammer price is higher, it is reasonable to consider that the final price could be higher.

4. Sales Trends: Of the 12 times it has been auctioned, it has sold on 9 occasions, indicating good demand. Additionally, there have been no recent auctions scheduled, which could increase interest in this specific auction.

5. Comparison with Previous Prices: Previous hammer prices vary, but there are examples of auctions exceeding 600 euros in better conditions. This suggests that, although the current condition is 75, there is potential for a higher hammer price.

Taking all these factors into account, an estimated maximum purchase price could be around 350-400 euros. This is based on market interest, price history, and the current condition of the coin.

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

1. Starting price: 200 euros.
2. Auction history: The coin has been auctioned 23 times, of which it has sold 20 times. This indicates good demand.
3. Average hammer price: 115.58 euros, which is significantly lower than the current starting price.
4. Previous prices: Hammer prices have varied, with some reaching up to 301 euros in a recent auction, but there are also lower prices, such as 55 euros in other auctions.

Since there is no information about the condition of this coin, it is difficult to make an accurate estimate. However, we can consider the following points:

- The starting price of 200 euros is quite high compared to the average hammer price of 115.58 euros.
- The trend of hammer prices in the past shows that, although there are exceptions, most coins have sold for below the current starting price.

Based on these factors, an estimated maximum purchase price could be in a range between the average hammer price and the starting price. A reasonable approach would be to consider a maximum purchase price of around 150-180 euros, as this is above the average hammer price but still below the starting price, which could be attractive to a buyer looking for good value.

Therefore, the 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. 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 coin has been auctioned 12 times and has sold on all occasions. This suggests that there is consistent interest in the coin, which can increase its value.

3. Previous Hammer Prices: By looking at previous hammer prices, we can see that in recent auctions, especially in 2022, the coin reached hammer prices of up to 650 euros. This is an indicator that the market is willing to pay high prices for coins in good condition.

4. Starting Price and Average Hammer Price: The current starting price is 400 euros, and the average hammer price in the past has been 344.25 euros. However, given that the current condition is 90, which is quite high, it is reasonable to expect that the hammer price will be above this average.

5. Recent Trends: In the most recent auctions, hammer prices have been quite high, suggesting that interest in this coin has increased.

Taking all these factors into account, an estimated maximum purchase price could be in the range of 600 to 700 euros, given the history of hammer prices and the good condition of the coin. This would allow for competitive bidding in the auction without exceeding the market value observed in previous auctions.

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

1. Current starting price: 250 euros.
2. Average hammer price in the past: 269.58 euros.
3. Previous hammer prices: The highest hammer prices in recent auctions have been 380 euros (on several occasions) and 360 euros.
4. Condition: There is no information about the current condition of the coin, but in the past, many coins of the same reference have had a condition of 95, suggesting they could be in good condition.

Given that the average hammer price is 269.58 euros and considering that in previous auctions hammer prices have reached up to 380 euros, an estimated maximum purchase price could be positioned in a range between the average hammer price and the highest observed price.

Estimated maximum purchase price:
- A conservative price could be around 300 euros, which is slightly higher than the average hammer price.
- A more optimistic price, considering the highest prices reached in the past, could be up to 380 euros.

Therefore, a reasonable maximum purchase price could be between 300 and 380 euros.

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

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. Previous Prices:
- The average hammer price in previous auctions is 182.22 euros, suggesting that, on average, coins of this reference have reached prices above their starting price.
- In previous auctions, hammer prices have varied, but there are examples of sales reaching up to 220 euros, indicating a potential for high demand.

3. Starting Price: The current starting price is 150 euros. This is an important benchmark, as starting prices are usually lower than hammer prices.

4. Sales Trends: Since this coin has sold every time it has been auctioned (10 out of 10), this indicates strong demand and consistent interest in the coin.

5. Comparison with Average Prices: The average starting price of 79.44 euros and the average hammer price of 182.22 euros suggest that the coin has good potential for appreciation.

Based on these factors, an estimated maximum purchase price could be in the range of 200 to 220 euros, considering that the condition is good and there is a history of sales in that range. Therefore, a reasonable maximum purchase price could be 210 euros.

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

1. Current starting price: 250 euros.
2. Auction history: The coin has been auctioned 10 times and has sold on all occasions, indicating good demand.
3. Previous prices:
- The average hammer price in the past has been 180.5 euros.
- In recent auctions, hammer prices have reached up to 320 euros (in 2022) and 290 euros (in 2014).
4. Condition: There is no information on the current condition, but in previous auctions, conditions have varied, with some coins reaching high prices despite not having a specified condition value.

Given that the starting price is 250 euros and considering that in previous auctions hammer prices have exceeded this, an estimated maximum purchase price could be in the range of 300 to 350 euros, depending on the competition in the auction and the interest of collectors.

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

2. Starting Price and Hammer Price: The current starting price is 400 euros, and the average hammer price in previous auctions is 327 euros. This suggests that the starting price is aligned with market expectations but may be a bit high compared to the average hammer price.

3. Auction History: The coin has been auctioned 3 times and has sold in all of them. This indicates that there is demand for this coin, which can positively influence its price.

4. Previous Prices: In previous auctions, the hammer prices were 320 euros (with a condition of 90) and 111 euros (with a condition of 75). Given that the current condition is better, it is reasonable to expect that the hammer price will be higher than 320 euros.

5. Market Trends: Since the average starting price is 241.67 euros and the average hammer price is 327 euros, we can infer that the market is willing to pay more for coins in better condition.

Taking all these factors into account, an estimated maximum purchase price could be between 350 and 400 euros, considering that the condition is high and there is a history of successful sales. However, since the starting price is 400 euros, it is possible that the hammer price will not exceed this value, so a reasonable maximum purchase price could be approximately 375 euros.