To estimate a maximum purchase price for the coin in question, we can analyze the provided data, especially the previous auction prices and the current condition of the coin.

1. Current Condition: The coin has a condition of 70 (VF-). This indicates that it is in an acceptable state, but it is not of the highest quality.

2. Previous Auction Prices: By observing the auction prices of coins with a similar condition (70), we can see that they have varied. Some examples are:
- 2020-09-17: Auction price 25
- 2020-05-26: Auction price 18
- 2019-07-03: Auction price 18
- 2018-10-15: Auction price 10
- 2022-10-17: Auction price 21

3. Price Trends: The average auction price for this coin is 39.8 euros, but this includes coins in better conditions. Given that the condition of the coin at auction is 70, it is reasonable to expect that the auction price will be below this average.

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

5. Estimation: Based on previous auction prices and the current condition, a reasonable maximum purchase price could be in the range of 25 to 35 euros. This aligns with previous auction prices for coins of similar condition and also takes into account the starting price.

Therefore, an estimated maximum purchase price for this coin 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 rating of 30 (BC+). This indicates that it is not in the best condition, which generally affects its value.

2. Auction History:
- The average hammer price for similar coins in the past has been 98.02 euros.
- Previous auctions of coins with a similar condition (30) have had hammer prices that vary, but are generally in the range of 15 to 40 euros.

3. Starting Prices and Estimates:
- The current starting price is 12 euros, which is relatively low.
- The average starting price for similar coins is 61.47 euros, suggesting there is potential for an increase in the hammer price.

4. Recent Trends: In the most recent auctions, hammer 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. This is because, although the condition is not high, the price history and recent auction trends suggest that there could be enough interest to reach that range.

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 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 in question, we will consider several factors:

1. Coin Condition: The coin has a condition rating of 95 (S/C-), indicating that it is in very good shape. This generally increases its value compared to coins with lower conditions.

2. Auction History:
- The average hammer price for this coin in the past has been 22.95 euros.
- In previous auctions, hammer prices of up to 85 euros have been reached for coins with similar condition (100) and 40 euros for coins with a condition of 95.

3. Starting Price and Estimates:
- The current starting price is 15 euros, which is slightly higher than the average starting price of 12.94 euros.
- The estimated price for this auction is 25 euros, suggesting that moderate interest is expected.

4. Sales Trends: The coin has been sold in 66 out of the 69 previous auctions, indicating good demand.

Based on these factors, a reasonable maximum purchase price could be in the range of 40 to 60 euros, considering that the condition is high and there have been previous auctions with higher hammer prices. However, since the starting price is 15 euros and the estimated price is 25 euros, a maximum purchase price of 50 euros could be a prudent estimate, allowing for some margin for competition in the auction.

To estimate a maximum purchase price for the coin in question, we can analyze the provided data, especially the previous auction prices and the current condition of the coin.

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 comparison with previously auctioned coins, those with a condition of 75 or 80 have reached higher auction prices.

2. Previous Auction Prices:
- In previous auctions, coins with a condition of 70 have had auction prices of up to 9 euros.
- Coins with a condition of 75 have reached auction prices of up to 50 euros.
- Coins with a condition of 80 have reached auction prices of up to 200 euros.

3. Average Auction Price: The average auction price for this coin is 44.85 euros, suggesting that, in general, coins of this reference tend to sell for relatively high prices.

4. Starting Price: The starting price is 15 euros, which is a good starting point for the auction.

5. Sales Trends: Out of the 17 times it has been auctioned, it has sold 13 times, indicating good demand.

Based on these factors, an estimated maximum purchase price could be in the range of 30 to 50 euros, considering that the current condition is 70 and the average auction price is 44.85 euros.

Therefore, a reasonable estimated maximum purchase price could be 40 euros. This allows for a margin for competition in the auction, given that the starting price is 15 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 in question, we can analyze the provided data, especially the previous auction prices and the current condition of the coin.

1. Current Condition: The coin has a condition of 70 (VF-). This indicates that it is in an acceptable state, but it is not of the highest quality.

2. Previous Auction Prices: By observing the auction prices of coins with a similar condition (around 70), we can see that:
- In previous auctions, coins with a condition of 70 have reached hammer prices of 21, 25, 33, and 86 euros.
- The trend shows that the hammer price can vary, but it generally falls within a range of 20 to 30 euros for similar conditions.

3. Average Hammer Price: The average hammer price for this particular coin is 98.22 euros, but this may be influenced by coins in better condition or by exceptional auctions.

4. Starting Price: The current starting price is 18 euros, which suggests that the seller expects a lower price initially.

5. Estimation: Given that the condition is 70 and considering the previous hammer prices, an estimated maximum purchase price could be in the range of 30 to 50 euros. This is based on the fact that, although the average hammer price is higher, the current condition limits the selling potential.

Therefore, an estimated maximum purchase price for this coin could be 40 euros.