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 75 (MBC), 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 coins of this reference is 89.5 euros.
- In previous auctions, we have seen hammer prices that varied significantly, from 28 euros to 140 euros, depending on the condition and other factors.

3. Starting Price: The current starting price is 120 euros, suggesting that the seller has high expectations for this auction.

4. Price Trends: In past auctions, coins with a similar condition (70) have reached hammer prices of up to 140 euros. This suggests that there is a market willing to pay higher prices for well-preserved coins.

5. Supply and Demand Analysis: Given that this coin has been auctioned 12 times in the past and has sold 10 of those times, there is a consistent interest in this reference, which may increase its value.

Based on these factors, an estimated maximum purchase price could be in the range of 130 to 150 euros, considering that the condition is good and there is a history of hammer prices that supports this estimate. However, since the starting price is 120 euros, it is likely that buyers will be willing to bid up to that range to secure 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 rating of 75 (VF), indicating that it is in acceptable shape, but not among the best qualities. This generally affects the price, as coins in better condition tend to fetch higher prices.

2. Auction History:
- The average starting price for similar coins is 431.78 euros, and the average final price is 794.17 euros.
- In the past, this coin has had final prices that varied significantly, ranging from 198.87 euros to 2898.01 euros, depending on the condition and other factors.

3. Price Trends:
- The last auction for this coin in 2023 had a final price of 700 euros with a condition rating of 80, suggesting that interest in this coin remains strong.
- The highest recorded auction was for 2898.01 euros, but that was for a coin in better condition (condition rating of 90).

4. Current Starting Price: The starting price is 100 euros, which may attract more bidders, but the final hammer price will depend on the competition in the auction.

Taking all these factors into account, an estimated maximum purchase price for this coin, considering its condition and price history, could be in the range of 600 to 800 euros. This is based on the average final price and recent interest in similar coins.

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

1. Starting Price: 100 euros. This is the initial price expected to be obtained at the auction.
2. Coin Condition: 75 (MBC). This indicates that the coin is in fairly good condition, which may positively influence its value.
3. Auction History:
- It has been auctioned 3 times in the past, of which it has only sold once.
- The average starting price in previous auctions was 70.43 euros, and the average hammer price was 40.86 euros.
- In the 2015 auction, the hammer price was 40.86 euros, and in 2021, the estimated price was 58.21 euros.

Given that the coin is in good condition and the starting price is 100 euros, it is reasonable to assume that interest in the coin could be higher in this auction. However, the sales history shows that it has not always sold for high prices.

Taking into account the starting price and the history of hammer prices, an estimated maximum purchase price could be positioned between the starting price and the average hammer price of previous auctions.

Therefore, an estimated maximum purchase price could be around 80-90 euros. This reflects interest in the coin but also considers the history of lower prices in previous auctions.

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 (MBC+), which indicates that it is in relatively good shape, but not of the highest quality (FDC).

2. Auction History:
- The average hammer price for similar coins is 2204.75 euros.
- The average starting price is 1387.98 euros.
- In the past, coins with a similar condition (80) have sold for varying prices, with some examples being:
- 1500 euros in 2012.
- 1500 euros in 2012 (also).
- 960 euros in 2014.
- 1200 euros in 2017.

3. Price Trends:
- Hammer prices have shown a trend of increasing over time, especially for coins in good condition.
- The last auction in 2023 had a hammer price of 1550 euros for a coin with a condition of 85.

4. Current Starting Price: The starting price is 250 euros, which is relatively low compared to previous hammer prices.

Based on these factors, an estimated maximum purchase price could be in the range of 1500 to 2000 euros, considering that the condition is good but not excellent, and that the price history shows that similar coins have reached higher prices in the past.

Therefore, an estimated maximum purchase price could be 1800 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 80 (MBC+), indicating that it is in relatively good shape. This suggests that its value should be in the upper range of previous auction prices.

2. Previous Auction Prices: Looking at previous auction prices, we can see that they have varied considerably. For example, in 2014 it sold for 200 euros, and in 2020 for 170 euros. However, there are also lower auction prices, such as 32 euros in 2012.

3. Average Auction Price: The average auction price for this coin is 99.56 euros, which can serve as a good reference point.

4. Current Starting Price: The starting price is 35 euros, which is quite low compared to previous auction prices.

5. Sales Trends: The coin has been auctioned 28 times, of which it has sold 12 times. This indicates a moderate interest in the coin, which may influence its price.

Given all this, an estimated maximum purchase price could be in the range of 120 to 150 euros, considering that the condition is good and that previous auction prices have reached higher figures. However, since the starting price is 35 euros, the competition in the auction may not be very intense, which could result in a lower final price.

Therefore, a reasonable maximum purchase price could be 120 euros.