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

1. Condition of the coin: The coin in question has a condition rating of 90 (EF), indicating that it is in quite good shape.

2. Historical auction data:
- The average hammer price for coins of similar condition (EF) in the past has been approximately 98.9 euros.
- Coins with conditions of 90 and 95 have been auctioned, and the hammer prices have varied, but they have generally remained within a range that may indicate a higher hammer price for superior conditions.

3. Starting price and previous prices:
- The current starting price is 25 euros, which is significantly lower than the average hammer price.
- In previous auctions, coins with a condition of 90 have reached hammer prices ranging from 40 to 190 euros, depending on demand and other factors.

4. Auction trends:
- Since it has been auctioned 1295 times and sold 999 times, this indicates good demand for this coin.

Based on these factors, an estimated maximum purchase price for the coin in question could be in the range of 100 to 150 euros. This is based on the average hammer price and the condition of the coin, as well as the price trends from previous auctions.

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

1. Coin Condition: The coin has a condition rating of 90 (EBC), 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 has been 44.08 euros.
- In previous auctions, coins with a similar condition (90) have reached hammer prices that varied, but some have gone up to 48 euros or more under similar conditions.

3. Starting Price: The starting price is 15 euros, suggesting that there is considerable room for the final price to be higher.

4. Price Trends: By observing previous hammer prices for coins with a condition of 90, it can be noted that the price range can vary, but it is reasonable to expect that a coin in this condition will reach a hammer price above the average.

Based on these factors, an estimated maximum purchase price for this coin could be between 60 and 80 euros, considering that the condition is good and there is a price history that supports this estimate.

Therefore, a reasonable maximum purchase price could be 70 euros.

To estimate a maximum purchase price for the coin with a grade of 95 (EF+), we can analyze historical data from previous auctions and hammer prices.

1. Current coin data:
- Grade: 95 (EF+)
- Starting price: €18
- Average hammer price: €44.08

2. Relevant historical data:
- In previous auctions, coins with similar grades (around 90-95) have had hammer prices that vary significantly. For example:
- A coin with a grade of 90 was hammered at €48.
- Another with a grade of 95 was hammered at €180.
- There are also examples of coins with a grade of 85 that were hammered at €130.

3. Price analysis:
- The trend shows that coins in high-grade conditions (like 95) can reach hammer prices significantly higher than the average hammer price of €44.08.
- Considering that the highest hammer price in the past for coins of similar grade has been €180, and that the average hammer price is €44.08, we can estimate a price range.

4. Maximum price estimation:
- Given that the coin's grade is high (95), a hammer price that could be considered reasonable might be in the range of €150 to €200.
- To be conservative, an estimated maximum purchase price could be €150.

Therefore, the estimated maximum purchase price for the coin with a grade of 95 (EF+) could be €150.

To estimate a maximum purchase price for the coin with a grade of 95 (EF+), we can analyze historical data from previous auctions and hammer prices.

1. Current coin data:
- Grade: 95 (EF+)
- Starting price: €18
- Average hammer price: €44.08

2. Relevant historical data:
- In previous auctions, coins with similar grades (around 90-95) have had hammer prices that vary significantly. For example:
- A coin with a grade of 90 was hammered at €48.
- Another with a grade of 95 was hammered at €180.
- Generally, hammer prices for grades from 90 to 95 have ranged between €30 and €440.

3. Hammer price analysis:
- The trend shows that coins in EF+ condition (95) can reach significantly higher prices than the average hammer price of €44.08.
- Looking at the highest hammer prices in the past, the price of €180 seems to be a good benchmark for a coin in this condition.

4. Maximum purchase price estimation:
- Given the high grade and considering previous hammer prices, a reasonable maximum purchase price could be in the range of €150 to €200.

Therefore, an estimated maximum purchase price for this coin could be approximately €180.

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

1. Current Condition: The coin has a condition rating of 80 (MBC+), indicating that it is in relatively good shape, but not the best possible condition.

2. Starting Price: The starting price is 200 euros, which sets a baseline for the auction.

3. Sales History:
- The average hammer price in previous auctions is 232.74 euros.
- In recent auctions, we have seen hammer prices that vary, with some reaching up to 400 euros in similar conditions.

4. Recent Trends: In the most recent auctions, hammer prices have shown a range from 245 euros to 400 euros, depending on the condition and demand at that time.

5. Comparison with Previous Prices: In past auctions, coins with similar conditions have reached hammer prices that exceed the current starting price.

Based on these factors, an estimated maximum purchase price could be in the range of 300 to 350 euros, considering that the coin is in good condition and that interest in coins of this type may vary. Therefore, a reasonable maximum purchase price could be 350 euros.