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

1. Current condition: The coin has a condition rating of 80 (MBC+), indicating that it is in quite good shape.

2. Auction history:
- The average hammer price for similar coins has been 85.45 euros.
- In previous auctions, hammer prices have varied, with a maximum of 110 euros and a minimum of 70 euros for coins with similar conditions.

3. Starting price: The starting price is 60 euros, which may be a good indicator of the expected sale.

4. Price trends:
- The coin has been auctioned 14 times, of which 13 have sold. This suggests good demand.
- The last auction shows a hammer price of 85 euros, which aligns with the average hammer price.

Based on this data, an estimated maximum purchase price could be around 90-100 euros, considering that the condition is good and that the price history shows that coins in similar conditions have reached hammer prices of up to 110 euros.

Therefore, a reasonable maximum purchase price could be 100 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 75 (MBC), indicating that it is in quite good shape. This may positively influence its value.

2. Current Listing Price and Previous Prices: The current listing price is 1200 euros, which is significantly higher than the starting and hammer prices from previous auctions. However, the hammer prices for coins with similar conditions (75) have ranged from 45 to 1100 euros.

3. Sales Trends: The coin has been auctioned 11 times in the past, of which it has sold 10 times. This indicates good demand and consistent interest in the coin.

4. Average Hammer Price: The average hammer price for similar coins is 154.6 euros, suggesting that the current listing price is quite high compared to the historical average.

5. Auction Expectations: Since it will be auctioned in the coming days and there is prior interest, this could drive the price up, but it is also important to consider that the listing price is quite elevated.

Taking all these factors into account, an estimated maximum purchase price could be in the range of 600 to 800 euros. This range considers the good condition of the coin, historical demand, and the fact that the current listing price is quite high compared to previous hammer prices.

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 increases its value compared to coins with lower conditions.

2. Auction history:
- The average hammer price for coins with a similar condition (95) has been approximately 37.8 euros.
- In previous auctions, hammer prices for coins with a condition of 95 have varied, but some have reached up to 120 euros in exceptional conditions.

3. Starting price and previous prices:
- The current starting price is 18 euros, which is relatively low compared to previous hammer prices.
- The average starting price in the past has been 24.47 euros, suggesting that the current starting price could be attractive to buyers.

4. Sales trends: The coin has been auctioned 30 times, of which 20 have sold, indicating good demand. Additionally, there has been a significant number of recent auctions with hammer prices ranging from 25 to 45 euros.

Based on these factors, an estimated maximum purchase price could be between 40 and 60 euros, considering that the condition is high and there is a history of hammer prices supporting this estimate. However, since the market can fluctuate, it is advisable to keep an eye on the auction and adjust the bid accordingly.