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 (VF-), which indicates that it is in an acceptable state, but not among the best qualities. This can influence the price, as coins in better condition tend to reach higher prices.

2. Auction History:
- The average hammer price for coins of this reference is 236.91 euros.
- In previous auctions, hammer prices have varied, with some reaching up to 500 euros, but there are also cases where the price was significantly lower.
- The last auction with a similar condition (70) had a hammer price of 500 euros.

3. Starting Price: The starting price of 300 euros is a good indicator of what is expected to be obtained for the coin, but it does not necessarily reflect the final hammer price.

4. Sales Trends: The coin has been sold in 11 out of 13 auctions, indicating reasonable demand.

Based on these factors, an estimated maximum purchase price could be situated in a range between the average hammer price (236.91 euros) and the highest price reached in previous auctions (500 euros). Given that the condition is 70, a reasonable maximum purchase price could be:

Estimated maximum purchase price: 400 euros.

This price reflects a balance between the current condition, the price history, and the demand observed in previous auctions.

To estimate a maximum purchase price for the coin in question, we can analyze the provided data, including the current condition, previous auction prices, as well as the general price trend.

1. Condition: The coin has a condition of 85 (ebc-), which indicates that it is in quite good shape. This is relevant because coins in better condition tend to fetch higher prices.

2. Previous Prices:
- The average hammer price for similar coins has been 2221.88 euros.
- In previous auctions, we have seen hammer prices that varied, but some relevant examples are:
- 2000 euros for a coin with a condition of 85.
- 2400 euros for a coin with unspecified condition, but in a similar range.
- 3400 euros for a coin with unspecified condition, but in a higher range.

3. Starting Price: The current starting price is 2800 euros, which is higher than the average starting price of 1384.21 euros, suggesting that the seller has high expectations for this auction.

4. Trends: Looking at previous auctions, it seems that coins with similar conditions have reached hammer prices ranging from 2000 to 2400 euros, with some exceptional cases exceeding 3000 euros.

Based on these points, an estimated maximum purchase price could be set in a range between 2400 and 3000 euros, considering that the condition is good and the starting price is relatively high. However, since the starting price is 2800 euros, a reasonable maximum purchase price could be approximately 3000 euros. This would allow for competitive bidding in the auction without exceeding a limit that could be considered excessive based on historical data.

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 a medium-low quality. This may influence the price, as coins in better condition typically fetch higher prices.

2. Auction History:
- The average hammer price in previous auctions is 273.48 euros.
- 28 out of the 33 coins auctioned have been sold, indicating good interest in this reference.
- Previous hammer prices for coins with a similar condition (75) have varied, but there are examples of sales reaching up to 325 euros.

3. Starting Price: The starting price is 250 euros, which may indicate the seller's expectations.

4. Price Trends: In previous auctions, hammer prices have shown a tendency to be higher than the starting price, especially for coins in similar conditions.

Considering these factors, an estimated maximum purchase price could be around 300-350 euros, given that interest in the coin is high and the average hammer price is 273.48 euros. This also takes into account that the condition is a limiting factor, but not the only one.

Therefore, a reasonable maximum purchase price could be 350 euros.

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

2. Auction History:
- The average hammer price for this coin in the past is 164.14 euros.
- The coin has been auctioned 38 times, of which it has sold 28 times, indicating good demand.
- Previous hammer prices varied significantly, with some reaching very high prices (for example, 600 euros in a previous auction).

3. Starting Price and Average Starting Price:
- The current starting price is 70 euros, which is relatively low compared to the average hammer price.
- The average starting price is 103.28 euros, suggesting that the current starting price could be attractive to buyers.

4. Recent Trends: In the most recent auctions, hammer prices have ranged from 55 to 100 euros for similar conditions.

Based on these factors, an estimated maximum purchase price could be in the range of 150 to 200 euros, considering that the condition is good and that the price history shows that coins in similar conditions have reached higher prices in the past.

Therefore, a reasonable maximum purchase price could be 180 euros.