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 fairly good shape, but not the best possible condition.

2. Auction History:
- The average hammer price in previous auctions is 126.92 euros.
- In past auctions, hammer prices have varied, with some reaching up to 220 euros in the highest case (although that coin had a condition rating of 80).
- Most hammer prices for coins with similar condition (75) have been in the range of 90 to 160 euros.

3. Starting Price and Average Starting Price:
- The current starting price is 60 euros, which is below the average starting price of 75.77 euros. This could indicate that there is a buying opportunity at a lower price.

4. Sales Trends: The coin has been sold in 13 out of 15 auctions, suggesting that there is consistent interest in this coin.

Based on these factors, an estimated maximum purchase price could be in the range of 120 to 150 euros, considering that the condition is good and that the auction price history for similar coins supports this estimate.

Therefore, a reasonable maximum purchase price could be 150 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 (MS+), which is quite good. This suggests that its value should be in the upper range of previous auctions.

2. Previous Auction Prices:
- The average hammer price for coins of similar condition (80) has been 114.38 euros.
- In previous auctions, hammer prices for coins with a condition of 80 have varied, but some examples are:
- 180 euros in December 2020.
- 150 euros in October 2020.
- 120 euros in January 2019.
- 295 euros in September 2017 (although this last one may be an exceptional case).

3. Current Starting Price: The starting price is 90 euros, indicating that the auctioneer expects moderate interest in the coin.

4. Sales Trends: The coin has been sold in 38 out of the last 45 auctions, indicating good demand.

5. Average Hammer Price: The average hammer price of 114.38 euros suggests that, in general, coins of this type tend to sell for above their starting price.

Based on these factors, an estimated maximum purchase price could be in the range of 120 to 150 euros, considering that the condition is good and that interest in the coin appears to be solid. However, since the highest hammer price in the past has been 295 euros, it is possible that in a competitive auction the price could exceed 150 euros, especially if there are several interested bidders.

Therefore, a reasonable maximum purchase price could be 150 euros, but be prepared for a potentially higher bid if demand is strong.

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. Auction History:
- The average hammer price for similar coins in the past has been approximately 67.86 euros.
- Previous auctions show that coins with similar conditions have reached hammer prices that vary, but there are examples of sales exceeding 100 euros, such as an auction in 2017 where it sold for 160 euros.

3. Starting Price and Estimates:
- The current starting price is 75 euros, which is slightly higher than the average starting price of 65.5 euros.
- The estimated price for this auction is 90 euros, suggesting that there are expectations for the coin to sell at a reasonable price.

4. Sales Trends: Of the 20 times it has been auctioned in the past, 14 have resulted in sales, indicating good demand.

Taking all these factors into account, an estimated maximum purchase price could be in the range of 90 to 120 euros, considering that the condition is good and there are precedents for successful sales at higher prices.

Therefore, a reasonable maximum purchase price could be 100 euros. This allows for some competition in the auction and aligns with previous hammer prices for coins in similar conditions.

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 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 in previous auctions is 315.83 euros.
- The coin has been sold every time it has been auctioned, indicating a consistent interest in it.
- In previous auctions, hammer prices have varied, but there are examples of sales exceeding 400 euros, especially for coins with similar conditions.

3. Starting Price and Estimates:
- The current starting price is 300 euros, which is a good starting point.
- The average starting price in the past has been 211.36 euros, suggesting that the current starting price is relatively high, but not unusual for a coin in good condition.

4. Recent Trends: In the most recent auction, a coin with a condition of 80 sold for 600 euros, indicating that there is potential for price increases depending on demand.

Based on these factors, an estimated maximum purchase price could be between 400 and 450 euros. This is based on the historical interest in the coin, its good condition, and the price behavior in previous auctions. However, it is important to consider the competition in the auction and current demand, which could influence the final price.