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 is a fairly good state. This suggests that its value could be in the mid-high range of previous auctions.

2. Previous Prices: Looking at previous auction prices for coins with a similar condition (75), we see that they have ranged between 9 and 25 euros. The average hammer price for coins with a condition of 75 has been approximately 12 to 20 euros.

3. Average Hammer Price: The average hammer price for this particular coin has been 19.25 euros, indicating that in the past it has reached prices close to this value.

4. Recent Trends: In the most recent auctions, hammer prices have shown a range of 12 to 30 euros for similar conditions, suggesting that there is growing interest in this coin.

5. Starting Price: The starting price is 9 euros, which is relatively low compared to previous hammer prices.

Taking all these factors into account, an estimated maximum purchase price for this coin could be around 25 euros. This is based on recent interest and previous hammer prices for coins of similar condition.

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 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 previous auction prices for coins with a similar condition (80), we can see that they have reached auction prices of up to 90 euros in the past. For example, at the auction on December 15, 2020, a coin with a condition of 80 was sold for 35 euros, and in other auctions, prices have varied but have reached up to 90 euros for higher conditions.

3. Average Auction Price: The average auction price for this coin is 65.02 euros, which can also serve as a reference.

4. Starting Price: The current starting price is 12 euros, suggesting that there is considerable room for the final auction price to be higher.

5. Market Trends: Since the coin has been auctioned 56 times and has had a high sales percentage (48 out of 56), this indicates a consistent interest in this coin, which may influence a higher auction price.

Based on these factors, an estimated maximum purchase price could be in the range of 80 to 100 euros. This is based on the current condition, previous auction prices, and general interest in the coin. However, it is important to note that the final price may vary depending on competition at the auction and other market factors at the time of the auction.

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 fairly good shape, but not the best possible condition.

2. Auction History:
- The average hammer price in previous auctions is 27 euros.
- In recent auctions, hammer prices have varied depending on the condition. For example, in 2019, a coin with a similar condition sold for 110 euros, but that is an exceptional case.
- In 2021, a coin with the same condition (75) was hammered at 50 euros.

3. Starting Price and Average Starting Price: The current starting price is 12 euros, and the average starting price in the past is 17.62 euros. This suggests that interest in the coin may be increasing.

4. Sales Trends: Out of the 14 times it has been auctioned, it has sold 9 times, indicating a good level of interest and demand.

5. Proximity of New Auctions: There are 2 auctions scheduled in the coming days, which could influence demand and price.

Taking all these factors into account, an estimated maximum purchase price for this coin could be in the range of 40 to 50 euros, as this price reflects its condition and historical interest in previous auctions. However, if competition is high at the auction, it might be reasonable to consider a bit more, up to 60 euros, but that will depend on the dynamics at the time of the auction.

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

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

2. Previous Prices:
- In previous auctions, we have seen hammer prices that vary significantly. For example, a coin with a similar condition (30) sold for 18 euros and another for 15 euros. However, there is a hammer price of 160 euros for a coin with a condition of 85, indicating that the value can increase significantly with better condition.
- The average hammer price for similar coins is 75.75 euros, which can serve as a reference.

3. Starting Price and Estimates: The current starting price is 12 euros, which is quite low compared to the average hammer price. This suggests that there could be interest in the coin, especially if the starting price is attractive.

4. Sales Trends: The coin has been auctioned 5 times, of which it has sold 4 times. This indicates that there is an active market for this coin, which may increase its value.

Taking all these factors into account, an estimated maximum purchase price could be in the range of 30 to 50 euros. This is based on the current condition and previous hammer prices for coins in similar conditions. A price of 50 euros could be a reasonable limit, considering that interest in the auction could lead to a higher bid.

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

1. Current Condition: The coin has a condition of 30 (BC+), indicating that it is not in the best shape. This generally affects the auction price.

2. Auction History:
- The coin has been auctioned 9 times, of which it has sold 8 times. This indicates good demand.
- Previous auction prices varied, but there are some relevant prices to consider:
- In 2020, it sold for 18 euros with a condition of 70.
- In 2020, it sold for 65 euros with a condition of 80.
- In 2021, it sold for 25 euros with a condition of 80.
- In 2022, it sold for 20 euros with a condition of 70.
- In 2024, it sold for 35 euros with a condition of 80.

3. Starting Price and Average Price:
- The current starting price is 12 euros, and the average starting price in previous auctions is 32.78 euros, with an average hammer price of 41.38 euros.

4. Price Trends:
- Hammer prices have fluctuated, but it seems there is a price range that remains between 18 and 65 euros, depending on the condition.

Given that the current condition of the coin is 30 (BC+), which is lower than the conditions of the coins that have sold for higher prices, it is reasonable to adjust the expected hammer price downward.

### Maximum Purchase Price Estimate:
Considering all these factors, a reasonable maximum purchase price could be in the range of 20 to 30 euros. This is based on the fact that the condition is not high, but there is a sales history suggesting it could reach a higher price than the current starting price.

Therefore, an estimated maximum purchase price could be 25 euros.