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

1. Starting Price: 400 euros. This is the initial price set for the auction.
2. Current Condition: 80 (MBC+). This indicates that the coin is in good condition, which can positively influence its value.
3. Auction History:
- In 2016, the coin was auctioned with a starting price of 1084.97 euros and sold for 2034.32 euros, with a condition of 75.
- In 2023, it was auctioned with a starting price of 1000 euros and an estimated price of 1300 euros, with a condition of 80.

4. Average Starting and Final Prices: The average starting price is 828.32 euros and the average final price is 2034.32 euros. This suggests that, in general, coins of this reference tend to reach significantly higher prices than their starting price.

Given that the condition of the current coin is 80, which is the same as the last sale, and considering that the starting price is significantly lower than previous final prices, we can estimate a maximum purchase price.

Based on the price history and condition, a reasonable maximum purchase price could be in the range of 1200 to 1500 euros, as this aligns with the estimated price of the previous auction and the fact that the coin is in good condition.

Therefore, an estimated maximum purchase price could be 1500 euros.

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 85 (MBC+/EBC-), indicating that it is in quite 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 in the past is 330.32 euros.
- Previous hammer prices for this same coin varied, but there was a hammer price of 579.03 euros in 2015 for a coin with a condition of 75, suggesting that the price could be significantly higher for a coin in better condition.

3. Current Starting Price: The starting price is 125 euros, which is quite low compared to the average hammer price.

4. Sales Trends: Out of the 7 times it has been auctioned, it has sold 4 times, indicating interest in the coin, although it did not sell 3 times, which may be a factor to consider.

5. Proximity of the Auction: There is an auction scheduled in the coming days, which may influence demand and price.

Based on these factors, an estimated maximum purchase price could be in the range of 300 to 400 euros, considering that the condition is good and the average hammer price is 330.32 euros. However, given the interest in the coin and the relatively low starting price, a reasonable maximum purchase price could be approximately 350 euros.

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:
- In the past, the coin has been auctioned 5 times, and all have sold, indicating consistent demand.
- Previous hammer prices have varied, but the highest was 92.24 euros in 2015 with a condition of 75, and 90 euros in 2020 with a condition of 80.

3. Current Starting Price: The starting price is 120 euros, which is significantly higher than previous hammer prices. This may indicate that the seller expects an increase in value, possibly due to the condition or current demand.

4. Average Hammer Price: The average hammer price of 70.25 euros suggests that, in general, coins of this reference have sold for a price lower than the current starting price.

5. Market Trends: Given that the condition of the coin is better than some of the previous auctions, it is reasonable to assume that it could reach a higher price than previous hammer prices, but not necessarily the starting price.

Taking all these factors into account, an estimated maximum purchase price could be between 90 and 100 euros, considering that the condition is good and there is a history of hammer prices that supports this estimate. However, given the starting price of 120 euros, it is possible that some bidders may be willing to pay a bit more, but it would be wise not to exceed 100 euros to ensure a reasonable purchase.

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

1. Current starting price: 90 euros.
2. Coin condition: 80 (MBC+), indicating good preservation.
3. Auction history:
- In 2016, the coin was auctioned with a starting price of 40 and 50 euros, and it sold for 170 euros on one of those occasions.
- In 2014, the starting price was 120 euros, but there is no information on the final price.
4. Average final price: 170 euros, suggesting that, in general, coins of this reference tend to reach higher prices at auctions.

Given that the coin is in good condition and considering the price history, the previous highest final price (170 euros) is a good indicator. However, the current starting price is 90 euros, which suggests there may be an opportunity to purchase at a lower price.

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

Estimated maximum purchase price: 150 euros.

This price reflects a balance between the price history, current condition, and 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 of 80 (MS+), indicating that it is in fairly good shape, but not the best possible condition.

2. Auction History:
- It has been auctioned 6 times in the past, of which 5 have sold. This indicates a consistent interest in the coin.
- The average starting price in previous auctions is 248.37 euros, and the average hammer price is 492.18 euros. This suggests that, in general, buyers are willing to pay a considerably higher price than the starting price.

3. Previous Prices:
- In the 2018 auction, the coin sold for 380 euros with a condition of 90.
- In 2020, it sold for 460 euros, also with a condition of 90.
- The 2015 auction had a hammer price of 1155.92 euros, but this seems to be an exceptional case, as the starting price was very high.

4. Condition Comparison: A condition of 80 is lower than the conditions of 90 in previous auctions that achieved hammer prices of 380 and 460 euros. This suggests that the hammer price for this coin could be lower than those values.

5. Estimation: Given that the average hammer price is 492.18 euros and considering that the current condition is lower than the conditions that achieved higher prices, an estimated maximum purchase price could be in a lower range.

Taking all these factors into account, an estimated maximum purchase price for this coin could be around 350 to 400 euros. This reflects a balance between the historical interest in the coin and its current condition.

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

1. Current starting price: 3500 euros. This is the initial price set for the auction.
2. Condition: The coin has a condition rating of 80 (MBC+), indicating that it is in fairly good shape, but not the best possible condition.
3. Auction history: The coin has been auctioned once before, with a starting price of 2250 euros and a hammer price of 2300 euros. This suggests that interest in the coin may be moderate, as it sold close to its starting price.
4. Average starting and hammer prices: The average starting price of 2875 euros and the average hammer price of 2300 euros are also important indicators. The hammer price is significantly lower than the current starting price.

Given that the coin has a starting price of 3500 euros, which is considerably higher than the previous hammer price and the average hammer price, it is likely that buyer interest may not be high enough to reach that price.

Taking all these factors into account, an estimated maximum purchase price could be positioned between the average hammer price and a bit more, considering the condition. It might be reasonable to estimate a maximum purchase price of around 2800 to 3000 euros, as this aligns with historical interest and the condition of the coin.

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

1. Current starting price: 1300 euros.
2. Current condition: 80 (MBC+), which is good condition, although lower than the 85 condition of the previous auction.
3. Average starting price in the past: 2123.84 euros.
4. Average hammer price in the past: 5322.18 euros.
5. Data from the previous auction: In 2014, the coin was auctioned with a starting price of 2947.67 euros and was hammered down at 5322.18 euros.

Given that the current condition is lower than that of the previous auction, it is reasonable to expect that the hammer price will not reach the same level as in 2014. However, the current starting price is significantly lower than both the average starting price and the hammer price of the previous auction.

Taking these factors into account, an estimated maximum purchase price could be positioned between the average hammer price of the previous auction and the current average hammer price, adjusted for condition.

We could estimate a maximum purchase price around 4000 euros, considering that condition is an important factor and that the starting price is relatively low. This allows for a margin for competition in the auction and the potential interest from other buyers.

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 75 (MBC), 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 7726.22 euros.
- In previous auctions, coins with a condition of 75 have reached hammer prices of 2750 euros (2011) and 8000 euros (2013).
- Coins with higher conditions (90) have also sold for higher prices, such as 5500 euros and 8000 euros.

3. Starting Price: The current starting price is 3000 euros, which may indicate a minimum expected price.

4. Sales Trends: The coin has been auctioned 7 times, of which 6 have sold, indicating a consistent interest in this reference.

5. Comparison with Previous Prices: Previous hammer prices for similar conditions suggest that the price could range between 2750 and 8000 euros, depending on demand at the auction.

Based on these factors, an estimated maximum purchase price could be in the range of 6000 to 8000 euros, considering that the condition is good and there is a history of hammer prices supporting this estimate. However, since the condition is not the highest, a more conservative price could be around 6000 euros.

Therefore, a reasonable estimated maximum purchase price could be 7000 euros.