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 80 (MBC+), which indicates that it is in quite good shape. This generally increases its value compared to coins with lower conditions.

2. Auction History:
- In 2013, a coin with a condition of 90 was auctioned with a starting price of 146.49 euros, although the final price is not known.
- In 2021, a coin with a condition of 75 had an unspecified starting price but sold for 52.64 euros.

3. Starting Prices and Average Prices:
- The current starting price is 50 euros, and the average starting price in the past has been 98.25 euros, with an average final price of 52.64 euros.

4. Demand and Supply: The coin has been auctioned 2 times in the past, of which it has sold 1 time. This suggests that there is moderate interest in the coin.

Given that the current condition of the coin is better than that of the 2021 auction and is close to that of 2013, we can infer that its value could be closer to the starting price of 146.49 euros for the coin with a condition of 90, although it will not reach that price due to the difference in condition.

Taking all these factors into account, an estimated maximum purchase price could be between 70 and 90 euros, considering that the condition is good and there is moderate interest in the coin. A price of 80 euros could be a reasonable starting point for an offer.

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

1. Condition of the coin: The coin in question has a condition of 80 (MS+), which indicates that it is in relatively good shape, but not among the best qualities.

2. Previous auction prices: By observing the hammer prices of coins with similar conditions (around 80), we can see that they have varied. For example:
- In 2012, a coin with a condition of 80 sold for 28 euros.
- In 2013, another coin with a condition of 80 sold for 23.37 euros.
- In 2014, a coin with a condition of 75 sold for 50 euros.

3. Average hammer price: The average hammer price for this particular coin is 82.61 euros, suggesting that, in general, coins of this reference tend to sell for higher prices.

4. Starting price: The starting price of 50 euros is a good starting point, but given that the average hammer price is significantly higher, it is reasonable to expect that the final hammer price will exceed the starting price.

5. Recent trends: In recent auctions, hammer prices have shown a trend of being higher, as seen in the October 2022 auction, where a similar coin sold for 180 euros.

Taking all these factors into account, an estimated maximum purchase price for the coin in question could be between 80 and 120 euros, considering that the condition is good and that interest in coins of this reference may lead to a higher hammer price.

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 based on the provided data:

1. Current Condition: The coin has a condition rating of 75 (MBC), indicating a medium-low quality. This may influence the price, as coins in better condition tend to fetch higher prices.

2. Starting Price and Average Hammer Price: The starting price is 70 euros, and the average hammer price in previous auctions is 113.01 euros. This suggests that, generally, coins of this reference tend to sell for above their starting price.

3. Sales History: The coin has been auctioned 98 times, of which 55 have resulted in sales. This indicates considerable interest in the coin, which may increase its value.

4. Previous Prices: Looking at previous hammer prices for coins with a similar condition (75), we can see that they have reached hammer prices that vary, but some have reached 190 euros in the past.

5. Recent Trends: In the most recent auctions, hammer prices for coins of similar condition have ranged between 55 and 190 euros.

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

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

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

1. Condition: The coin has a condition of 85 (ebc-), which is a fairly good state. This suggests that its value should be in the upper range of previous auctions.

2. Previous Prices:
- The average hammer price for coins with the same condition (85) has been 91.25 euros.
- In previous auctions, hammer prices have varied, but they have been in a range of 75 to 120 euros.

3. Starting Price: The current starting price is 70 euros, which is reasonable given the history of starting and hammer prices.

4. Trends: The coin has sold in 4 out of the last 5 auctions, indicating a consistent interest in this reference. Additionally, the average hammer price (91.25 euros) suggests that buyers are willing to pay more than the starting price.

5. Estimation: Given that the average hammer price is 91.25 euros and considering that the coin has a condition of 85, an estimated maximum purchase price could be in the range of 90 to 110 euros, depending on the competition in the auction.

Conclusion: An estimated maximum purchase price for this coin could be approximately 100 euros. This is based on the price history and the condition 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 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 for similar coins in the past is 61.2 euros.
- The last auction of a coin with a similar condition (80) sold for 80 euros.
- There is a history of auctions where hammer prices have varied, but the range seems to be between 39 and 155 euros, depending on condition and other factors.

3. Starting Price: The starting price is 50 euros, which may influence the final price, as hammer prices are often higher than the starting price.

4. Sales Trends: Out of the 13 times it has been auctioned, 10 have sold, indicating a consistent interest in this coin.

Based on these factors, an estimated maximum purchase price could be in the range of 80 to 100 euros, considering that the condition is good and that the auction price history for similar coins supports this estimate.

Therefore, a reasonable maximum purchase price could be 90 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 (EF), 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 coins with a similar condition (90) in the past has been 71.21 euros.
- In previous auctions, hammer prices for coins with a condition of 90 have reached up to 113.47 euros (in 2012).
- There are also examples of coins with a condition of 90 that have sold for lower prices, such as 48.31 euros (in 2015).

3. Starting Price and Trends:
- The current starting price is 50 euros, which is slightly lower than the average starting price of 52.34 euros.
- Since it has been auctioned 33 times in the past and has sold 21 times, there is good demand for this coin.

4. Future Projections:
- The estimated price for the next auction is 150 euros, suggesting that there are expectations for the coin's value to increase.

Based on these factors, an estimated maximum purchase price could be in the range of 100 to 120 euros. This is based on the auction price history for coins of similar condition and the trend of increasing value for the coin.

Therefore, a reasonable maximum purchase price could be 110 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 80 (MS+), 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 in previous auctions is 69.02 euros.
- The last auction for this coin had a hammer price of 65 euros with a condition of 80.
- In previous auctions, hammer prices have varied, but there are examples of hammer prices exceeding 200 euros for coins of similar or better condition.

3. Starting Price and Average Starting Price:
- The current starting price is 20 euros, which is relatively low compared to the average starting price of 35.64 euros.

4. Sales Trends: The coin has been auctioned 15 times, of which 9 have been sold. This indicates a consistent interest in the coin, which may influence its price.

Based on these factors, an estimated maximum purchase price could be in the range of 80 to 100 euros, considering that the condition is good and that the auction price history suggests it could reach higher figures in auctions. However, since the starting price is low, it could be a good opportunity to acquire it at a reasonable 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 75 (MBC), indicating that it is in fairly good shape, but not the best possible condition.

2. Auction History:
- The average hammer price in previous auctions is 33.47 euros.
- Starting prices have varied, with some hammer prices in similar conditions (75 and 80) reaching up to 59.78 euros in the past.

3. Price Trends:
- In previous auctions, starting prices have ranged from 12.12 euros to 78.93 euros, but the most relevant hammer prices for similar conditions have been in the range of 20 to 59.78 euros.

4. Current Starting Price: The starting price is 15 euros, suggesting that there is room for the hammer price to be significantly higher.

5. Sale Expectations: Given that there have been 19 previous auctions and 9 sales, there is moderate interest in this coin, which may influence competition during the auction.

Based on these factors, an estimated maximum purchase price could be in the range of 50 to 60 euros, considering that the condition is good and there is a history of hammer prices in that range for similar conditions. However, given the starting price of 15 euros, it is possible that the actual hammer price may be lower, but this range provides a reasonable target for an interested buyer.

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

1. Condition: The coin has a condition rating of 85 (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 in previous auctions is 79.13 euros, suggesting that, in general, coins of this reference tend to sell for significantly higher prices than the starting price.
- In past auctions, we have seen hammer prices vary, with some reaching up to 300 euros in 2011, although this may be an exceptional case.

3. Starting Price and Estimated Prices:
- The current starting price is 25 euros, which is relatively low compared to the average hammer price.
- The estimated price in previous auctions has varied, but there are examples where prices have been estimated at 40 to 50 euros.

4. Recent Trends:
- In the most recent auctions, the hammer price has been 40 and 120 euros for coins with the same condition, indicating a growing interest or an upward trend in the value of these coins.

Based on these factors, an estimated maximum purchase price could be in the range of 80 to 120 euros, considering the average hammer price and the condition of the coin. However, given the history of hammer prices, a reasonable maximum purchase price could be approximately 100 euros. This allows for competition in the auction and reflects the value of the coin's condition.