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), indicating a medium-low state of preservation. This generally affects the price, as coins in better condition tend to reach higher prices.

2. Auction History:
- The average hammer price for this coin in the past is 112.42 euros.
- The condition of coins auctioned in the past varies, but there are examples of coins with a condition of 75 that have sold for prices ranging from 45 to 65 euros.
- The last auction with a similar condition (75) had a hammer price of 65 euros.

3. Price Trends:
- Hammer prices have fluctuated, but there is a pattern that coins with a condition of 75 have reached hammer prices in the range of 55 to 70 euros in recent auctions.

4. Estimated Price:
- The estimated price for this coin in previous auctions has been between 50 to 100 euros, depending on the condition and demand.

Based on these factors, an estimated maximum purchase price for the coin with a condition of 75 could be around 70-80 euros. This is based on the auction price history and the current condition of the coin.

To estimate a maximum purchase price for the coin with a grade of 70 (MBC-), we can analyze historical data from previous auctions and consider several factors:

1. Grade: A grade of 70 (MBC-) is an intermediate level. In the past, coins with a similar grade have had auction prices that vary considerably, but they generally fall within a range of 60 to 135 euros.

2. Previous auction prices: By observing the auction prices of coins with a grade of 70, we find:
- 2020-09-17: 95 euros
- 2018-12-11: (not available, but estimated at 130)
- 2018-09-19: 135 euros
- 2022-04-26: 110 euros
- 2023-05-23: (not available, but estimated at 90)

3. Price trends: The average auction price for this coin is 143.21 euros, indicating that there is potential for an increase in the auction price in future sales.

4. Average starting price: The average starting price is 81.39 euros, suggesting that buyers are willing to pay more than the starting price on many occasions.

5. Competition analysis: Given that there is an auction scheduled in the coming days, competition may influence the final price. If there is significant interest, the price could increase.

Based on these factors, an estimated maximum purchase price for the coin with a grade of 70 (MBC-) could be in the range of 120 to 150 euros. This takes into account both the historical auction prices and the general trend of increasing interest in coins of this grade.

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+), which indicates that it is not in very good shape. This generally reduces its value compared to coins in better condition.

2. Auction History: By observing the hammer prices of coins with different levels of condition, we can see that coins in much better conditions (such as 70, 80, 85, 90, and 95) have reached significantly higher prices. For example:
- A coin with a condition of 70 has sold for a hammer price of up to 35 euros.
- A coin with a condition of 95 has sold for up to 450 euros.

3. Average Hammer Price: The average hammer price for this coin in the past has been 94.47 euros, but this includes coins in better conditions.

4. Recent Trends: In the most recent auctions, the hammer prices for coins with similar conditions have varied, but they have generally remained in a low range due to the condition.

Given that the condition of this coin is 30 (BC+), and considering the hammer price history of coins in similar conditions, an estimated maximum purchase price could be in the range of 10 to 20 euros. This is based on the fact that coins in lower conditions tend to sell for much lower prices than those in better condition.

Therefore, an estimated maximum purchase price for this coin could be 15 euros.

To estimate a maximum purchase price for the coin with a grade of 70 (MBC-), we can analyze historical data and price trends.

1. Historical Data:
- The coin has been auctioned 65 times, of which it has sold 52 times.
- The average hammer price for this coin is 94.47 euros.
- In previous auctions with a grade of 70, hammer prices have varied, but some examples can be observed:
- 2020-09-17: 15 euros
- 2020-02-12: 20 euros
- 2019-12-10: 6 euros
- 2019-10-15: 10 euros
- 2023-01-31: 25 euros

2. Price Trends:
- Hammer prices for coins with a grade of 70 have shown a range from 6 euros to 25 euros in the most recent auctions.
- However, the average hammer price (94.47 euros) suggests that there is a higher selling potential, especially considering that a grade of 70 is relatively good.

3. Estimation:
- Given that the grade is 70 and considering the average hammer price and previous hammer prices, an estimated maximum purchase price could be set in a higher range than the lowest observed prices, but not as high as the overall average.
- A reasonable maximum price could be 30 to 40 euros, taking into account that this is a price that has been reached in recent auctions and reflects good preservation.

Therefore, the estimated maximum purchase price for this coin would be 30-40 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 rating of 70 (VF-). This indicates that it is in an acceptable state, but not of high quality. In comparison with previously auctioned coins, a condition of 70 is similar to one from past auctions.

2. Previous Prices:
- In the 2020 auction, a coin with a condition of 75 had a starting price of 18 euros, but it did not sell.
- In 2022, a coin with a condition of 90 sold for 140 euros, indicating that the price can significantly increase with better condition.
- In another 2022 auction, a coin with a condition of 70 had a starting price of 15 euros, but it did not sell.

3. Average Hammer Price: The average hammer price for similar coins is 140 euros, suggesting that there is a market willing to pay high prices for coins in good condition.

4. Starting Price and Estimates: The current starting price is 12 euros, which is quite low compared to the average hammer price. The average starting price of 31.25 euros also suggests that there is potential for price increase.

5. Demand and Supply: Given that there is an auction scheduled in the coming days and considering that there have been more auctions without sales, this may influence demand.

Taking all these factors into account, an estimated maximum purchase price could be in the range of 30 to 50 euros, considering that the condition is a limiting factor and that the hammer price may be higher depending on demand at the auction.

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

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

1. Coin Condition: The coin has a condition rating of 70 (MBC-), indicating that it is in acceptable condition, but not among the best. This can influence the price, as coins in better condition typically fetch higher prices.

2. Auction History:
- The average starting price from previous auctions is 14.18 euros, and the average hammer price is 16.4 euros.
- In past auctions, hammer prices have varied, but there are examples where the coin has sold for 18 euros in similar conditions.

3. Price Trends:
- In previous auctions, estimated prices have ranged between 15 and 30 euros, depending on condition and other factors.
- The last auction had a starting price of 12 euros and an estimated price of 20 euros, suggesting there is interest in this coin.

4. Supply and Demand: Since it has been auctioned 10 times and sold 6 times, there is moderate interest in the coin, which can influence the price.

Based on these factors, an estimated maximum purchase price could be around 20-25 euros, considering that the average hammer price is 16.4 euros and that estimated prices in previous auctions have reached up to 30 euros.

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