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

1. Current Condition: The coin has a condition rating of 80 (MBC+), indicating that it is in quite good shape.

2. Auction History:
- It has been auctioned 10 times in the past, of which it has sold 9 times.
- The average starting price in previous auctions is 27.86 euros, and the average hammer price is 35.13 euros.
- In past auctions, hammer prices have varied, with a maximum price of 75 euros in 2020 and other hammer prices around 20-50 euros on different occasions.

3. Price Trends:
- The last auction of this coin (2024-07-11) had a hammer price of 35 euros with a condition of 80, which is relevant for our estimation.
- In previous auctions, coins with similar conditions (75-90) have reached hammer prices of up to 50 euros.

4. Current Starting Price: The starting price is 18 euros, suggesting that the seller expects a lower price than the historical average.

Based on this data, an estimated maximum purchase price could be in the range of 35 to 50 euros, considering that the condition is good and that the price history shows that coins in similar conditions have reached those values.

Therefore, a reasonable estimated maximum purchase price could be 45 euros.

To estimate a maximum purchase price for the coin in question, we can consider several factors based on the provided data:

1. Current Condition: The coin has a condition of 70 (VF-), indicating that it is in relatively good shape, but not the best possible condition.

2. Historical Prices: Looking at the hammer prices of coins with similar conditions (70 and 80), we can see that:
- In previous auctions, coins with a condition of 70 have reached hammer prices of up to 85 euros.
- Coins with a condition of 80 have had hammer prices that vary, but some have reached 240 euros.

3. Average Hammer Price: The average hammer price for this coin is 184.95 euros, suggesting that, in general, coins of this reference tend to sell for relatively high prices.

4. Recent Trends: In the most recent auction, a coin with a condition of 80 sold for 240 euros, indicating that there is a growing interest in coins of good condition.

5. Starting Price: The starting price is 10 euros, which is quite low compared to previous hammer prices.

Taking all these factors into account, an estimated maximum purchase price for the coin with a condition of 70 could be in the range of 80 to 120 euros. This is based on the fact that, although the condition is not the highest, the interest in the coin and previous hammer prices suggest that it could reach a higher price than the average hammer price for similar conditions.

Therefore, a reasonable estimated maximum purchase price could be 100 euros.

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

1. Current Condition: The coin has a condition of 70 (VF-). This indicates that it is in an acceptable state, but not of high quality. In the past, coins with a similar condition have had auction prices that vary.

2. Auction History:
- In the past, coins with a condition of 70 have been auctioned, and the final prices have been quite variable. For example:
- In 2020, a coin with a condition of 70 was sold for 8 euros.
- In 2018, another coin with the same condition did not sell, but it had a starting price of 12 euros.
- There are also examples of coins with higher conditions (such as 90 or 95) that have sold for significantly higher prices (up to 120 euros).

3. Starting Price and Average Price:
- The current starting price is 12 euros, and the average final price in the past has been 55 euros. This suggests that there is potential for an increase in the final price.

4. Recent Trends:
- In the most recent auctions, final prices have been lower for similar conditions (for example, 20 euros for a condition of 80).

Based on these factors, an estimated maximum purchase price could be between 20 and 30 euros. This is based on the auction price history for coins with similar conditions and the average final price observed.

Therefore, a reasonable maximum purchase price could be 30 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-). This indicates that it is in an acceptable state, but not of high quality. In the past, coins with a similar condition have had auction prices that vary, but are generally lower than those in better condition.

2. Auction History:
- The average hammer price for similar coins has been 109.96 euros.
- In previous auctions, coins with a condition of 70 have had hammer prices ranging from 12 to 54 euros, depending on other factors such as demand and rarity.

3. Starting Price: The starting price is 12 euros, which suggests that the auction house expects moderate interest in the coin.

4. Recent Trends: In the most recent auctions, hammer prices for coins with similar conditions have shown a range that can reach up to 70-80 euros, but this depends on demand at the time of the auction.

5. Estimation Based on Historical Data: Given that the average hammer price is 109.96 euros, but considering the condition of 70 and the historical hammer price for coins in similar conditions, an estimated maximum purchase price could be between 50 and 80 euros.

Conclusion: Based on all these factors, an estimated maximum purchase price for this coin could be approximately 70 euros. This reflects a balance between the current condition and the historical hammer prices.

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 30 (BC+). This indicates that it is not in very good shape, which generally negatively affects its value.

2. Historical Prices: By looking at the auction prices of coins with similar conditions, we can see that the hammer prices for coins with conditions of 30 or close have varied. For example, in previous auctions, coins with a condition of 30 have had hammer prices ranging between 15 and 25 euros.

3. Starting Price and Average Price: The current starting price is 12 euros, and the average hammer price in the past has been 72.36 euros, but this includes coins in better conditions. Given that the condition of this coin is lower, it is unlikely to reach that average price.

4. Sales Trends: The coin has been auctioned 197 times, of which it has sold 163 times. This indicates good demand, but the hammer price will depend on the condition.

5. Comparison with Previous Prices: In previous auctions, coins with a similar condition have had hammer prices ranging between 15 and 25 euros.

Based on these factors, an estimated maximum purchase price for this coin, considering its condition and historical prices, could be between 20 and 25 euros. This reflects a balance between demand, condition, and previous hammer prices.

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-). This indicates that it is in an acceptable state, but not of high quality.

2. Historical Prices: By looking at the auction prices of coins with similar conditions (around 70), we can see that the auction prices have varied. For example:
- In previous auctions, coins with a condition of 70 have reached auction prices between 20 and 50 euros.
- Most auction prices for similar conditions are in the range of 20 to 40 euros.

3. Starting Price and Average Auction Price: The current starting price is 15 euros, and the average auction price for this coin in the past has been approximately 47.86 euros. However, given that the current condition is 70, it is likely that the auction price will not reach the highest average.

4. Recent Trends: In the most recent auctions, auction prices for coins with similar conditions have been in the range of 25 to 40 euros.

Based on these factors, an estimated maximum purchase price for this coin could be between 30 and 50 euros, considering that the condition is not the highest and that the starting price is relatively low.

Therefore, a reasonable maximum purchase price could be 40 euros.

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 80 (MS+), indicating that it is in quite good shape. This generally translates to a higher price compared to coins with lower conditions.

2. Previous Prices: By looking at the auction prices of coins with similar conditions (around 80), we can see that auction prices have varied, but there are examples of auctions reaching up to 60 euros for coins in similar conditions.

3. Average Auction Price: The average auction price for this coin is 46.83 euros, which is also a good indicator of the expected value.

4. Recent Trends: In the most recent auctions, the auction prices for coins with similar conditions have been in the range of 30 to 60 euros.

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

Taking all these factors into account, an estimated maximum purchase price for this coin could be around 60-70 euros. This is based on the analysis of previous prices, the condition of the coin, and current market trends.

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

1. Starting price: 12 euros.
2. Condition: The coin has a condition rating of 25 (BC), indicating that it is not in very good shape.
3. Auction history: It has been auctioned once before, with a starting price of 12 euros and a hammer price of 12 euros, suggesting that there has not been significant interest above its starting price.
4. Average hammer price: The average hammer price is also 12 euros, reinforcing the idea that interest in this coin is limited.

Given that the condition is low and the auction history shows no price increase, the estimated maximum purchase price could be slightly above the starting price, but not much more, as interest appears to be low.

Therefore, an estimated maximum purchase price could be around 15 euros, considering there might be a slight increase in demand or interest in the current auction.