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 75 (MS), 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 similar coins in condition 75 has been 68.05 euros.
- In previous auctions, the hammer price has varied, with some prices reaching up to 180 euros in a recent auction (2022-03-17) for a coin of similar condition.

3. Starting Price and Average Starting Price: The current starting price is 45 euros, and the average starting price in the past has been 42.2 euros. This suggests that the starting price is reasonable and could attract bidders.

4. Sales Trends: The coin has sold in 23 out of the last 25 auctions, indicating good demand and consistent interest in this reference.

5. Maximum Price Estimate: Given that the average hammer price is 68.05 euros and considering that there have been exceptional sales reaching up to 180 euros, a reasonable maximum purchase price could be positioned between the average hammer price and the highest recorded price.

Taking all these factors into account, an estimated maximum purchase price for this coin could be approximately 80-100 euros. This reflects a balance between market interest, the coin's condition, and historical hammer prices.

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

1. Current Condition: The coin has a condition of 70 (MS-). This is an important factor, as coins in better condition tend to reach higher prices.

2. Auction History:
- The average hammer price for coins with a similar condition (70) has been approximately 20-25 euros in previous auctions.
- In past auctions, hammer prices for coins with a condition of 70 have varied, but there have been hammer prices of up to 32 euros in a 2013 auction.

3. Starting Price and Average Hammer Price:
- The current starting price is 18 euros, and the average hammer price is 26.75 euros. This suggests that there is potential for an increase in the hammer price.

4. Recent Trends: In recent auctions, the hammer price has been around 18-30 euros for coins with similar conditions.

Based on these factors, an estimated maximum purchase price could be between 30 and 35 euros, considering that interest in the coin may vary and that condition is a key factor in its value. However, it is important to keep in mind that the final price will depend on the competition in the auction and the interest of other collectors.

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 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 similar coins in the past is 67.61 euros.
- Previous auctions of coins with a similar condition (75) have had hammer prices that varied, but some have reached up to 96 euros (as seen in the auction on December 14, 2020).

3. Starting Prices and Hammer Prices:
- The current starting price is 40 euros, which is relatively low compared to the average hammer price.
- The average starting price in the past has been 45.66 euros, suggesting that the current starting price is competitive.

4. Sales Trends: The coin has been sold in 59 out of 68 auctions, indicating good demand and a history of successful sales.

Based on these factors, an estimated maximum purchase price could be in the range of 80 to 100 euros, considering that the condition is good and there is a history of hammer prices that supports this estimate. A price of 90 euros could be a reasonable target, as it falls in the middle of this range and aligns with previous hammer prices for coins of similar condition.

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

2. Auction History:
- The average hammer price for similar coins in the past has been 226.09 euros.
- In previous auctions, coins with a similar condition (30) have sold for prices ranging from 55 to 160 euros, with the last hammer price being 72 euros in January 2023.

3. Starting Price and Average Starting Price:
- The current starting price is 50 euros, which is relatively low compared to the average starting price of 140.53 euros for similar coins.

4. Sales Trends: The coin has been auctioned 42 times, of which 35 have resulted in sales. This indicates a consistent interest in the coin, which may influence the price.

5. Previous Estimates: In past auctions, the estimated price for coins with similar conditions has been up to 250 euros, although the actual hammer price has been lower.

Based on these factors, an estimated maximum purchase price for this coin could be between 70 and 120 euros, considering that the condition is not optimal and that the interest in the coin may not be high enough to reach the highest hammer prices. A price of 100 euros could be a good benchmark for a competitive offer.

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 quite good shape. This generally translates to a higher price compared to coins with lower conditions.

2. Auction History:
- The average hammer price for similar coins in a condition of 75 is approximately 22.89 euros.
- In previous auctions, the hammer price for coins with a condition of 75 has varied, but it has reached up to 65 euros in a previous auction with a condition of 80.

3. Starting Price and Previous Prices:
- The current starting price is 12 euros, which is relatively low compared to the average hammer price.
- In previous auctions, the hammer price has ranged from 5 to 65 euros, depending on the condition and other factors.

4. Sales Trends: The coin has been sold in 18 out of 22 auctions, indicating good demand.

Based on these factors, an estimated maximum purchase price could be set in a range between 30 and 40 euros, considering that the condition is good and the average hammer price is 22.89 euros. However, given the history of higher hammer prices, a maximum purchase price of 40 euros seems reasonable.