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

1. Current Condition: The coin has a grade of 70 (MS-). This is an important factor, as coins in better condition tend to reach higher prices.

2. Auction History:
- The average hammer price for coins with similar grades (70) in the past has been approximately 240-360 euros.
- The last auction of a coin with a grade of 70 had a hammer price of 320 euros.
- Overall, hammer prices for grade 70 coins have ranged between 200 and 360 euros in previous auctions.

3. Starting Price and Average Hammer Price:
- The current starting price is 300 euros, which is slightly higher than the average starting price of 248 euros.
- The average hammer price is 333.03 euros, suggesting that the coin could sell for a price close to this value.

4. Recent Trends:
- In the most recent auctions, hammer prices have shown a trend of being higher, especially for coins in good condition.

Based on these factors, an estimated maximum purchase price for this coin could be around 360 euros, considering that the condition is acceptable and the auction history shows hammer prices in that range. However, since the starting price is 300 euros, buyers may be willing to pay a little more, but not much beyond 360 euros, unless there is significant interest in the coin.

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

1. Starting Price: 100 euros. This is the initial price set for the auction.
2. Condition: The coin has a condition rating of 70 (VF-), indicating that it is in fairly good shape, although not the best possible condition. This may influence the price, as coins in better condition tend to fetch higher prices.
3. Auction History: The coin has been auctioned once in the past and sold on that occasion, suggesting that there is interest in it. There have been no failed sale attempts, which is a positive sign.
4. Average Hammer Price: No average hammer price is provided, making it more difficult to estimate a price based on previous sales.

Given that the starting price is 100 euros and considering that the coin has a condition rating of 70, an estimated maximum purchase price could be slightly higher than the starting price, especially if there is interest in the coin.

Taking all these factors into account, an estimated maximum purchase price could be between 120 and 150 euros. This would allow bidders to compete for the coin without straying too far from the starting price.

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 has a condition rating of 80 (MBC+), which indicates that it is in relatively good shape, but not of the highest quality (FDC).

2. Starting price: The starting price is 400 euros.

3. Historical data:
- The average hammer price for similar coins has been 283.35 euros.
- In previous auctions, coins with similar conditions have reached hammer prices that varied, but some examples are:
- A coin with a condition of 85 was sold for 340 euros.
- Another with a condition of 90 was sold for 320 euros.
- A coin with a condition of 95 was sold for 350 euros.

4. Price trends: Observing recent auctions, it seems that prices have been increasing, especially for coins in good condition.

5. Market expectations: Given that there is significant interest in this coin (it has been auctioned 270 times and sold 255 times), this may indicate a steady demand.

Based on these factors, an estimated maximum purchase price could be between 350 and 450 euros, considering that the starting price is 400 euros and that the condition of the coin is good, but not exceptional. This suggests that bidders may be willing to pay a little more than the starting price, but not enough to reach the hammer prices of coins in superior conditions.

Therefore, a reasonable maximum purchase price could be 450 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 rating of 80 (MS+). This is an important factor, as coins in better condition tend to reach higher prices.

2. Starting Price: The starting price is 400 euros. This sets a baseline for the auction.

3. Sales History: By observing previous auction prices for coins with similar conditions, we can see that hammer prices have varied. For example, in recent auctions, coins with conditions ranging from 80 to 90 have achieved hammer prices between 300 and 400 euros.

4. Recent Trends: In the most recent auctions, the hammer price for coins with similar conditions has been in the range of 350 to 450 euros, depending on demand and the rarity of the coin.

5. Average Hammer Price: The average hammer price for similar coins is 283.35 euros, but given that the condition of this coin is relatively good, we can expect the hammer price to be above this average.

Based on these factors, an estimated maximum purchase price for this coin could be between 450 and 500 euros, considering that the condition is good and there is interest in the auction. However, it is important to keep in mind that the final price will depend on the competition in the auction and the specific demand for this particular coin.

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 an acceptable state, but not in the best condition.

2. Historical Prices: By looking at previous auction prices for coins with similar conditions (75 and 80), we can see that auction prices have varied, but generally have remained in a range of 260 to 360 euros.

3. Starting Price and Average Hammer Price: The current starting price is 400 euros, which is higher than the average hammer price of 299.08 euros. This suggests that the starting price may be a bit optimistic, given the sales history.

4. Recent Trends: In the most recent auctions, hammer prices for coins of similar condition have been around 360 euros, indicating that there is interest in this price range.

Based on these factors, an estimated maximum purchase price could be around 350-370 euros. This is based on the analysis of previous hammer prices and the current condition of the coin.