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

2. Historical Auction Data: By observing the hammer prices of coins with similar conditions, we can see that the hammer prices for coins in higher condition grades (70 and 80) have reached prices between 20 and 55 euros. However, for coins in lower conditions, like the one we are evaluating, the hammer prices tend to be lower.

3. Average Hammer Price: The average hammer price for this coin in the past has been 153.86 euros, but this includes coins in better conditions. For a coin with a condition rating of 30, it is reasonable to expect a significantly lower hammer price.

4. Starting Price and Previous Prices: The current starting price is 12 euros, and in previous auctions, coins with similar conditions have had hammer prices ranging between 20 and 45 euros.

Taking all these factors into account, an estimated maximum purchase price for this coin, considering its condition and historical prices, could be in the range of 25 to 35 euros. This reflects a price that is reasonable given its state and the market context.

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

1. Current Condition: The coin has a grade of 30 (BC+), indicating that it is not in the best condition. This will affect its value compared to coins in better condition.

2. Auction History: By looking at previous auction prices for coins with similar grades, we can see that the highest hammer price for a coin with a grade of 30 was 33 euros. However, most hammer prices for higher grades (such as 70 and 80) are significantly higher.

3. Average Hammer Price: The average hammer price for this coin is 129.31 euros, but this includes coins in better condition. Given that the condition of the coin in question is quite low, it is unlikely to reach that price.

4. Recent Starting and Hammer Prices: In the most recent auctions, starting prices have been low (for example, a starting price of 12 euros with hammer prices of 20-25 euros for similar grades).

5. Market Trends: The coin has been auctioned 68 times, with a sell-through rate of 91% (62 out of 68). This suggests that there is consistent interest in the coin, which could help maintain its value.

Based on these factors, an estimated maximum purchase price for this coin, considering its condition and price history, could be between 25 and 35 euros. This reflects a balance between market interest and the condition of the 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 30 (BC+). This indicates that it is not in the best condition, which generally affects its value.

2. Auction History: By observing the hammer prices of coins with a similar condition (30) in the past, we can see that the hammer prices have varied. For example:
- In previous auctions, coins with a condition of 30 have reached hammer prices ranging from 10 to 20 euros.
- The average hammer price for coins with higher conditions (such as 70 or 80) has been significantly higher, but this cannot be directly applied to a coin with a condition of 30.

3. Starting Price and Average Hammer Price: The current starting price is 12 euros, and the average hammer price for similar coins is 98.74 euros, but this includes coins in better condition.

4. Recent Trends: In the most recent auctions, the hammer prices for coins with a condition of 30 have been in the range of 15 to 30 euros.

Based on these factors, an estimated maximum purchase price for this coin could be between 20 and 25 euros. This is based on the analysis of past auctions and the current condition of the coin.

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

1. Current Condition: The coin has a condition of 30 (BC+). This indicates that it is not in the best condition, which will affect its value.

2. Auction History: By observing the hammer prices of coins with similar conditions in the past, we can make a comparison. For example:
- In previous auctions, coins with conditions of 30 have had hammer prices that varied, but are generally in the range of 15 to 25 euros.
- A coin with a condition of 25 was sold for 14 euros, and another with a condition of 30 was sold for 20 euros.

3. Starting Price and Average Price: The current starting price is 12 euros, and the average hammer price in the past has been 67.01 euros, but this includes coins in better conditions.

4. Recent Trends: In the most recent auctions, hammer prices for coins of similar condition have been around 15 to 25 euros.

Based on these factors, an estimated maximum purchase price for this coin could be between 20 and 25 euros, considering that the condition is not optimal and that the price history shows that coins in similar conditions typically do not exceed this range.

Therefore, a reasonable maximum purchase price could be 25 euros.

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

1. Current Condition: The coin has a condition rating of 30 (BC+), indicating that it is not in very good shape. This generally reduces its value compared to coins in better condition.

2. Previous Auction Prices: By observing the auction prices of similar coins in the past, we can see that prices have varied considerably. For example, coins with similar conditions have had auction prices ranging from 10 to 50 euros, depending on demand and other factors.

3. Average Auction Price: The average auction price for this coin is 84.28 euros, but this includes coins in better condition. Given that the condition of this coin is lower, the auction price is likely to be lower.

4. Recent Trends: In the most recent auctions, the auction prices for coins with similar conditions have been in the range of 20 to 35 euros.

5. Starting Price: The starting price is 12 euros, suggesting that the auctioneer expects moderate interest in the coin.

Taking all these factors into account, an estimated maximum purchase price for this coin could be between 30 and 40 euros. This reflects a balance between the current condition, previous auction prices, and market trends.

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 95 (EF+), indicating that it is in very good shape. This generally increases its value compared to coins with lower conditions.

2. Auction History:
- The coin has been auctioned 9 times and has sold on all occasions, indicating good demand.
- The average hammer price in previous auctions is 24.33 euros, providing a solid basis for estimating its value.

3. Previous Prices:
- In the most recent auction (2023-05-23), the coin sold for 45 euros with a condition of 95.
- In another recent auction (2023-02-16), it sold for 65 euros, also with a condition of 95.

4. Starting Price: The current starting price is 12 euros, which is relatively low compared to previous hammer prices.

Based on this data, the maximum purchase price could be estimated by considering the highest hammer price in the past (65 euros) and the average hammer price (24.33 euros). Given the high condition and a history of successful sales, a reasonable maximum purchase price could be in the range of 50 to 70 euros.

Therefore, an estimated maximum purchase price could be 65 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 of 70 (MS-), which indicates that it is in acceptable shape, but not of high quality. This generally affects the price, as coins in better condition tend to fetch higher prices.

2. Auction History: By observing the hammer prices of coins with a similar condition (70) in the past, we can see that they have reached varying hammer prices. For example, in previous auctions, coins with a condition of 70 have had hammer prices ranging between 20 and 30 euros.

3. Average Hammer Price: The average hammer price for this particular coin is 98.74 euros, but this includes coins of different conditions. Given that the condition of this coin is 70, it is likely that the actual hammer price will be below this average.

4. Starting Price and Previous Prices: The current starting price is 15 euros, and the average starting price in the past has been 65.9 euros. However, the hammer prices of similar coins have been lower, suggesting that the starting price may be a good indicator of what to expect.

5. Recent Trends: In the most recent auctions, the hammer prices for coins with similar conditions have been in the range of 20 to 30 euros.

Based on these factors, an estimated maximum purchase price for this coin could be between 25 and 35 euros. This reflects a balance between the condition of the coin and the historical hammer prices for similar coins.

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

2. Previous auction prices: By looking at the auction prices of coins with a similar condition (70), we can see that they have varied. For example:
- In previous auctions, coins with a condition of 70 have reached hammer prices of 20, 30, and even 50 euros.
- The average hammer price for coins of similar condition seems to be in the range of 20 to 50 euros.

3. Average hammer price: The average hammer price for this particular coin is 98.74 euros, but this may be influenced by coins of better condition or exceptional auctions.

4. Starting price: The starting price is 15 euros, which suggests that the auctioneer expects moderate interest in the coin.

5. Auction trends: Given that the coin has been auctioned 218 times in the past, and has had a considerable number of sales (182), this indicates that there is an active market for this coin.

### Estimation of the maximum purchase price:
Taking all these factors into account, a reasonable maximum purchase price for this coin, considering its condition and previous hammer prices, could be between 40 and 60 euros. This is based on the fact that, although the average hammer price is higher, the condition of the coin limits its value compared to coins of better quality.

Therefore, an estimated maximum purchase price could be 50 euros.