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 90 (EF), which indicates that it is in quite good shape. This generally translates to a higher price compared to coins with lower conditions.

2. Current Starting Price and Previous Prices: The current starting price is 425 euros. In previous auctions, coins with similar conditions (around 90) have had hammer prices that varied, but many have exceeded 300 euros. For example, in recent auctions, coins with a condition of 90 have reached hammer prices of up to 380 euros.

3. Price Trends: By observing the hammer prices of coins with similar conditions in the past, the maximum hammer price has been in the range of 350 to 400 euros on several occasions. However, the current starting price is higher, suggesting that the market may be valuing this coin more than in previous auctions.

4. Demand and Supply: Given that there are 3 auctions scheduled in the coming days, this may increase competition and, therefore, the final price.

Based on these factors, an estimated maximum purchase price for this coin could be between 400 and 450 euros, considering that the starting price is 425 euros and that the condition is good. This also takes into account the possibility that demand in the auction may drive up the final 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 90 (EF), indicating that it is in quite good shape. This generally translates to a higher price compared to coins with lower conditions.

2. Current Listing Price and Previous Prices: The current listing price is 425 euros. In previous auctions, coins with similar conditions have had hammer prices that varied, but many have exceeded 300 euros. For example, in recent auctions, coins with a condition of 90 have reached hammer prices of up to 456 euros.

3. Price Trends: By observing the hammer prices of similar coins in the past, it can be noted that the hammer price tends to be in a range of 300 to 450 euros, depending on demand and condition.

4. Average Hammer Price: The average hammer price for similar coins is 276.88 euros, but given that the condition of this coin is superior, it is reasonable to expect a higher hammer price.

5. Sales Expectations: Since 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 around 450-500 euros, considering that the condition is good and there is interest in the coin. This also aligns with the hammer prices of recent auctions for coins of similar condition.

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

1. Starting Price: 150 euros. This is the initial price of the auction.
2. Condition: The coin has a condition rating of 70 (VF-), indicating that it is in relatively good shape, but not of high quality like the one sold in the past with a condition rating of 95.
3. Auction History: The coin has been auctioned once before, with a starting price of 500 euros and a hammer price of 26,000 euros. This suggests that there is significant interest in this coin, although the condition in that auction was significantly better.
4. Average Starting and Hammer Price: The average starting price is 325 euros and the average hammer price is 26,000 euros. This indicates that, in general, coins of this reference have a high market value.

Given that the current condition is lower than that of the previous auction, the hammer price will not be as high. However, the interest in the coin and the average hammer price suggest that there could be good selling potential.

Taking all these factors into account, an estimated maximum purchase price could be in the range of 1,500 to 2,500 euros. This is based on the current condition and historical interest in the coin, as well as the average hammer 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 85 (EF-), indicating that it is in quite good shape. This generally translates to a higher price compared to coins with lower conditions.

2. Current Listing Price and Previous Prices: The current listing price is 400 euros. In previous auctions, hammer prices have varied, but there are examples of sales that have exceeded 400 euros, especially for coins in similar or better conditions.

3. Price Trends: Looking at previous hammer prices, there are several cases where coins with similar conditions have reached hammer prices between 340 and 440 euros. This suggests that the market is willing to pay competitive prices for well-preserved coins.

4. Average Hammer Price: The average hammer price for this coin is 279.29 euros, but given that the current condition is above the average of auctioned coins, it is reasonable to expect a higher hammer price.

5. Sales Expectations: Since there are 3 auctions scheduled in the coming days, this may increase competition and, therefore, the hammer price.

Based on these factors, an estimated maximum purchase price could be between 450 and 500 euros. This is due to the good condition of the coin and the price trends in previous auctions. However, it is important to keep in mind that the final price will depend on the competition in the auction and the demand at that specific moment.