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 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 100.63 euros.
- In past auctions, the hammer price has varied, with a maximum of 220 euros in 2018 for a coin with a condition of 85.
- The last auction in 2022 had a hammer price of 75 euros, indicating that interest may have fluctuated.

3. Starting Price and Average Starting Price:
- The current starting price is 50 euros, and the average starting price in the past has been 55.63 euros.

4. Sales Trends: The coin has sold every time it has been auctioned, suggesting consistent interest.

Given that the coin's condition is 75 and considering the auction price history, an estimated maximum purchase price could be in a range between the average hammer price and the highest recorded price.

Taking all these factors into account, an estimated maximum purchase price could be approximately 120 euros. This is based on the fact that, although the condition is not the highest, interest in the coin has been consistent and the hammer price has reached higher figures in the past.

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

1. Coin Condition: The coin to be auctioned has a condition of 80 (MBC+). This is an important factor, as coins in better condition tend to reach higher prices.

2. Price History: By observing previous hammer prices for coins with a similar condition (around 80), we can see that the hammer prices have varied. For example:
- In previous auctions, coins with a condition of 80 have reached hammer prices of up to 150 euros.
- There are also examples of coins with a condition of 75 that have sold for around 100 euros.

3. Average Hammer Price: The average hammer price for this particular coin has been 136.65 euros, indicating that, in general, buyers are willing to pay close to this amount.

4. Starting Price: The starting price is 60 euros, which is relatively low compared to previous hammer prices.

5. Recent Trends: In the most recent auctions, hammer prices for coins with similar conditions have shown an increase, suggesting that interest in these coins may be growing.

Based on these factors, an estimated maximum purchase price for this coin could be in the range of 150 to 180 euros. This is based on the hammer price history for coins of similar condition and the current market interest.

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 80 (MS+), indicating that it is in quite good shape. This generally translates to a higher price compared to coins with lower conditions.

2. Current Listing Price and Previous Prices: The current listing price is 90 euros. In previous auctions, we have seen hammer prices that varied significantly, but there are examples of coins with similar conditions that have sold for higher prices. For instance, in 2018, a coin with a condition of 80 sold for 55 euros, and in 2021, another with a condition of 80 sold for 95 euros.

3. Sales Trends: The coin has been auctioned 67 times, of which 58 resulted in sales. This indicates a consistent interest in the coin, which may increase its value.

4. Average Hammer Price: The average hammer price for this coin is 83.88 euros, suggesting that the listing price of 90 euros is in line with market expectations.

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

Taking all these factors into account, an estimated maximum purchase price could be around 110-120 euros. This is based on the coin's condition, market interest, and previous hammer prices for coins of similar condition. However, it is important to remember that the final price may vary depending on competition in the auction and other market factors at the time of sale.

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 95 (S/C-), indicating that it is in very good shape. This generally translates to a higher price compared to coins with lower conditions.

2. Current listing price and previous prices: The current listing price is 120 euros. In previous auctions, the average hammer price has been 148.73 euros, suggesting that buyers are willing to pay more than the listing price.

3. Price trends: Looking at previous hammer prices for coins with a similar condition (95), it can be noted that they have reached hammer prices that vary, but many have exceeded 150 euros. For example, in recent auctions, hammer prices of 160 euros and 190 euros have been achieved.

4. Supply and demand: The coin has been auctioned 71 times, with a 63% sell-through rate, indicating relatively good demand. However, there are no upcoming auctions scheduled in the near future, which could increase interest in this specific auction.

Based on these factors, an estimated maximum purchase price could be between 160 and 180 euros, considering that the average hammer price has been 148.73 euros and that there are precedents for higher hammer prices for coins in similar conditions.

Therefore, a reasonable maximum purchase price could be 170 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 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 Auction Prices: By observing previous auction prices of coins with similar conditions (around 80), we can see that prices have varied. For example, in past auctions, coins with a condition of 80 have reached hammer prices of up to 150 euros.

3. Average Hammer Price: The average hammer price for this coin is 136.65 euros, providing a good reference point.

4. Recent Trends: In the most recent auctions, hammer prices have shown a range that can go from 90 to 700 euros, depending on the condition and demand at the time of the auction.

5. Starting Price: The starting price is 110 euros, indicating that the seller expects a reasonable minimum price.

Taking all these factors into account, an estimated maximum purchase price for this coin could be around 180-200 euros. This is based on the current condition, previous hammer prices, and market trends. However, it is important to remember that the final price may vary depending on the competition in the auction and the specific demand at that time.

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

1. Starting price: 60 euros.
2. Average hammer price in the past: 135 euros. This indicates that, generally, coins of this reference tend to sell for a significantly higher price than their starting price.
3. Condition of the coin: 30 (BC+). This suggests that the coin has a low state of preservation, which could negatively affect its value compared to coins in better condition.
4. Auction history: The coin has been auctioned once and sold on that occasion, indicating that there is interest in it.

Given that the average hammer price is 135 euros, but the condition is low (30), it is reasonable to adjust the estimated price downward.

We could consider a range between the starting price and the average hammer price, taking into account the condition. One approach could be to calculate a percentage of the average hammer price that reflects the condition.

If we consider that the condition of 30 (BC+) could justify a discount of 30-40% off the average hammer price, we could estimate a maximum purchase price of approximately:

- Average hammer price: 135 euros
- 30% discount: 135 - (135 * 0.30) = 94.5 euros
- 40% discount: 135 - (135 * 0.40) = 81 euros

Therefore, an estimated maximum purchase price could be between 81 and 94.5 euros.

In summary, a reasonable maximum purchase price could be around 90 euros.