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

1. Auction History: The coin has been auctioned 20 times, of which it has sold 18 times. This indicates good demand and consistent interest in the coin.

2. Hammer Prices: The average hammer price is 682.35 euros. However, there have been previous auctions where hammer prices have varied significantly, ranging from 440 euros to 900 euros.

3. Starting Prices and Estimates: Starting prices have ranged from 300 to 900 euros, with estimated prices reaching up to 1500 euros on some occasions.

4. Trends: In the most recent auctions, hammer prices have been in a range of 440 to 800 euros, suggesting that interest in the coin remains, but there may be some fluctuation in price depending on demand at the time of the auction.

5. Condition: There is no information about the condition of the coin in this auction, which may affect its value. However, since there is no negative data regarding its condition in previous auctions, we can assume that its state is acceptable.

Based on these points, an estimated maximum purchase price could be set in a range above the average hammer price, but not reaching the highest levels of the estimates.

Maximum Purchase Estimate: 900 euros.

This price reflects a balance between historical demand and recent hammer prices, considering that the coin has a history of successful sales and sustained interest.

To estimate a maximum purchase price for the coin in question, we can analyze the provided data. Here are some key points to consider:

1. Auction History: The coin has been auctioned 43 times, of which it has sold 32 times. This indicates a sell-through rate of 74.4%, suggesting there is considerable interest in this coin.

2. Hammer Prices: The average hammer price in the past is 84.59 euros. This is a good indicator of the value that buyers are willing to pay.

3. Starting Prices and Estimates: The average starting price is 67.37 euros, and hammer prices have varied in the past, with some reaching up to 160 euros in previous auctions.

4. Previous Prices: Looking at the highest recorded hammer prices, the highest was 160 euros, while other hammer prices in recent auctions have been in the range of 65 to 140 euros.

5. Condition: No information is provided about the condition of this coin, which may affect its value. However, given the price history, it seems that the coin has significant value regardless of its condition.

Based on this data, an estimated maximum purchase price could be in the range of 120 to 150 euros, considering that this is a price that has been reached in previous auctions and reflects buyer interest. 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. Auction History: The coin has been auctioned 28 times, of which it has sold 26 times. This indicates good demand and acceptance in the market.

2. Hammer Prices: The average hammer price is 85.68 euros. This is a good indicator of the value that buyers are willing to pay.

3. Previous Prices: By observing the hammer prices in previous auctions, we can see that they have varied, but there are several cases where the hammer price has exceeded 100 euros, especially in recent auctions. For example:
- In 2021, the hammer price was 100 euros.
- In 2024, a hammer price of 130 euros was reached.

4. Condition: There is no specific information about the condition of this coin, which may affect its value. However, the fact that it has reached high prices in the past suggests that, regardless of its condition, there is significant interest.

5. Price Estimates: Estimated prices in previous auctions have ranged between 75 and 150 euros, indicating a wide range of price expectations.

Based on this data, an estimated maximum purchase price could be around 120-130 euros, considering that recent auctions have reached hammer prices of up to 130 euros and that interest in the coin appears to be strong. However, it is important to keep in mind that the lack of information about the condition may influence the final price.

Based on the provided data, we can observe that the coin in question has had an average auction closing price of 44.45 euros in previous auctions. Additionally, its current condition is graded as 95 (UNC-), indicating that it is in quite good condition.

When analyzing the previous prices of this coin, we see that it has had a wide price range, from 5 euros to 112 euros in past auctions. The maximum estimated purchase price will depend on various factors, such as the current demand for this particular coin, the exact condition of the piece, and the competition in the auction.

Given that the average closing price has been 44.45 euros and considering the condition of 95 (UNC-), we could estimate a maximum purchase price around 50-60 euros. However, keep in mind that in past auctions, it has reached higher prices, so there may be interest in bidding beyond this range.

In summary, an estimated maximum purchase price for this coin in the upcoming auction could be around 50-60 euros, but it is important to be prepared for the possibility that the final price may be higher due to competition and demand at that time.

Based on the provided data, the coin in question has a conservation grade of 95 (S/C-), indicating that it is in quite good condition. Additionally, it has been auctioned five times in the past, of which it was sold on two occasions.

The average starting price in previous auctions has been 8.6 euros, while the average final price has been 12 euros. In the last recorded auction, the coin was sold for 14 euros, exceeding the estimated price.

Taking into account this data, the previous price history, and the conservation of the coin, my estimation for the maximum purchase price would be around 15-16 euros. Given that the coin has shown an increase in its final price in previous auctions, it is possible that in the next auction it could reach a value close to this estimation.

Based on the data provided, we can observe that the coin in question has had an average auction closing price of 111.17 euros in previous auctions. Additionally, the current condition of the coin is 80 (VF+).

Considering that the condition of the coin is relatively good and the average auction closing price has been 111.17 euros, we could estimate a maximum purchase price around that value or slightly higher. Given the condition is 80 (VF+), we could consider an estimated maximum purchase price of around 115-120 euros.

It is important to note that the final auction price will depend on several factors, such as the demand at that specific moment, the competition from other bidders, and the willingness of buyers to pay for that particular coin.

Based on the provided data, we can observe that the coin in question has performed well in previous auctions, with final prices exceeding the starting and estimated prices in most cases. The coin's condition is excellent, with a grade of 100 (S/C).

The average auction closing price from previous auctions was 35.33 euros, with an estimated price in the last auction of 10 euros and a closing price of 16 euros.

Considering the upcoming auction and taking into account its price history, condition, and demand, a maximum estimated purchase price for this coin could be around 40-45 euros. It is important to note that this is just an estimate and the final price may vary depending on the demand in the auction you participate in.