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

2. Current Listing Price and Previous Prices: The current listing price is 450 euros, and the average hammer price in previous auctions is 320 euros. This suggests that the market has valued this coin in a range lower than the current listing price.

3. Auction History: The coin has been auctioned twice before, with a hammer price of 320 euros in the 2020 auction and a listing price of 350 euros in the 2024 auction, although it did not sell in the latter. This indicates that interest may have decreased, especially with a condition of 25 in the most recent auction.

4. Market Trends: Given that the average listing price of similar coins is 341.67 euros and the average hammer price is 320 euros, this suggests that the market is willing to pay around 320-350 euros for coins in similar conditions.

Taking all these factors into account, an estimated maximum purchase price for this coin could be around 350-400 euros, considering that the condition is better than in previous auctions and that the current listing price is 450 euros. However, given the sales history and the average hammer price, it would be wise not to exceed 400 euros to ensure a reasonable purchase.

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 starting price is 425 euros. In previous auctions, coins with similar conditions have had hammer prices that vary, but many have exceeded 300 euros. For example, in recent auctions, coins with a condition of 90 have reached hammer prices of up to 400 euros or more.

3. Price Trends: By observing the hammer prices of coins with similar conditions in the past, it can be noted that the hammer price has been increasing, especially in recent years. This suggests that the demand for coins in good condition is growing.

4. Average Hammer Price: The average hammer price for similar coins is approximately 290.62 euros, but since this coin has a better condition, it is reasonable to expect that the hammer price will be above this average.

5. Sales Expectations: Given that there are 2 auctions scheduled in the coming days, this may increase competition and, therefore, the hammer price.

Taking all these factors into account, an estimated maximum purchase price for this coin could be between 450 and 500 euros. This is based on the condition, market price trends, and the current starting price.

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. Condition of the coin: The coin to be auctioned has a condition of 95 (EBC+), indicating that it is in very good condition. This is relevant because coins in better condition tend to fetch higher prices at auctions.

2. Previous auction prices: By looking at the auction prices of coins with a similar condition (95) in the past, we can see that prices have varied. For example:
- In December 2020, a coin with a condition of 95 was auctioned for 350 euros.
- In March 2021, another coin with a condition of 95 was auctioned for 326 euros.
- In June 2022, a coin with a condition of 95 was auctioned for 390 euros.

3. Starting price and average auction price: The starting price of the coin is 450 euros, and the average auction price for similar coins is 275.7 euros. However, since the condition of this coin is high, it is likely that the auction price will be above average.

4. Recent trends: In the most recent auctions, the auction prices for coins with a condition of 95 have ranged from 350 to 460 euros, suggesting that interest in coins in good condition has increased.

Based on these factors, an estimated maximum purchase price for this coin could be between 450 and 500 euros, considering that the starting price is 450 euros and that the condition is high. This also takes into account the possibility that bidders may be willing to pay a little more for a coin in such good condition.

Therefore, an estimated maximum purchase price could be 500 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 of 70 (VF-), indicating that it is in acceptable shape, but not in the best condition. This may affect its value compared to coins in better condition.

2. Historical Prices: Looking at previous auction prices, we can see that the coin has reached auction prices of up to 1300 euros in the past, with an average auction price of 1055.71 euros. This suggests that, under similar conditions, the price could be in that range.

3. Current Starting Price: The starting price is 1200 euros, indicating that the seller has expectations of a relatively high price, but it may also be an indicator that the market is willing to pay more.

4. Auction Trends: The coin has been auctioned 15 times, of which 14 have sold. This indicates good demand, which may influence the final auction price.

5. Comparison with Previous Prices: In previous auctions, coins with similar conditions have had final prices that varied, but generally, prices have been in the range of 800 to 1300 euros.

Taking all these factors into account, an estimated maximum purchase price could be around 1200-1300 euros, given that it is a price that has been reached in the past and is aligned with the current starting price. However, since the condition is not the highest, a more conservative price could be around 1100-1200 euros.

Therefore, a reasonable maximum purchase price could be 1300 euros, but it would be wise to consider a range of 1100 to 1300 euros depending on the competition in the auction and the interest of other buyers.

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: 1800 euros.
2. Current condition: 90 (EBC), indicating good preservation.
3. Auction history:
- It has been auctioned 5 times in the past, with 2 successful sales.
- The average starting price in previous auctions was 1337.09 euros, and the average hammer price was 1672.04 euros.
- The highest recorded hammer price was 3064.07 euros in 2012, when the condition was 85.

4. Price trends:
- The coin has had significant variations in its hammer price, ranging from 280 euros to 3064.07 euros.
- The current condition of the coin (90) is better than that of the 2012 auction (85), suggesting it could reach a similar or higher hammer price.

5. Auction expectations:
- Given that there is an auction scheduled in the coming days, and considering the starting price is 1800 euros, it is reasonable to expect that the hammer price will be above the previous average hammer price (1672.04 euros).

Based on these factors, an estimated maximum purchase price could be in the range of 2500 to 3200 euros, considering the good preservation and price history. This would allow for competitive bidding in the auction without exceeding a reasonable limit based on the historical performance of the coin.

Therefore, an estimated maximum purchase price could be 3000 euros.