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

1. Current Condition: The coin has a condition of 70 (VF-). This indicates that it is in relatively good shape, but not of the highest quality (UNC).

2. Previous Auction Prices: By looking at the auction prices of coins with a similar condition (70), we can see that the auction prices have varied. For example:
- In the auction on 2020-12-15, a coin with a condition of 70 sold for 50 euros.
- In other auctions, the auction prices for similar conditions have ranged between 36 and 85 euros.

3. Average Auction Price: The average auction price for this coin is 79.63 euros, suggesting that, in general, coins of this reference tend to sell for relatively high prices.

4. Price Trends: It is also important to consider that the current starting price is 12 euros, which is quite low compared to the average auction price. This could indicate a good buying opportunity.

5. Final Estimate: Given that the condition is 70 and considering previous auction prices, an estimated maximum purchase price could be in the range of 70 to 90 euros. This is based on the fact that, although the condition is not the highest, the price history suggests it could reach a higher price at auction.

Therefore, an estimated maximum purchase price for this coin could be 85 euros.

To estimate a maximum purchase price for the coin with a grade of 70 (MS-), we can analyze historical data and price trends.

1. Data from previous auctions:
- The coin has been auctioned 205 times, of which it has sold 180 times.
- The average hammer price is 58.59 euros.
- In previous auctions, hammer prices for coins with a similar grade (70) have varied, but they have generally remained in a range of 14 to 25 euros in recent auctions.

2. Price trends:
- In recent auctions, hammer prices for coins with a grade of 70 have been around 20-25 euros.
- The last auction of a coin with a grade of 70 had a hammer price of 22 euros.

3. Additional considerations:
- The starting price is 15 euros, indicating that the seller expects a higher hammer price.
- Given that there are 4 auctions scheduled in the coming days, this could increase competition and, therefore, the price.

Estimation of the maximum purchase price:
Based on the above information, a reasonable maximum purchase price for the coin with a grade of 70 (MS-) could be in the range of 25 to 30 euros. This takes into account the average hammer price and the possibility that competition in the auction may drive up the price.

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 fairly good shape, but not of the highest quality (FDC).

2. Previous Auction Prices: By looking at the auction prices of coins with a similar condition (75), we can see that they have varied. For example, in previous auctions, coins with a condition of 75 have reached hammer prices of 23, 20, and 45 euros.

3. Average Hammer Price: The average hammer price for this particular coin is 101.08 euros, but this may be influenced by coins in better condition.

4. Average Starting Price: The average starting price is 69.06 euros, which can give an idea of what sellers expect to obtain.

5. Recent Trends: In the most recent auctions, hammer prices have shown a trend of being higher, especially for coins in good condition.

Given all this, an estimated maximum purchase price for this coin, considering its condition and previous hammer prices, could be in the range of 45 to 75 euros. This is based on the fact that, although the coin is in decent condition, it is not of the highest quality, and previous hammer prices for similar coins have been lower.

Therefore, a reasonable maximum purchase price could be 70 euros.

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 (EF+), indicating that it is in very 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 has been 28 euros.
- In previous auctions, coins with similar condition (95) have sold for varying prices, with some reaching up to 72 euros (as in 2014) and 55 euros (in 2021).

3. Starting price and previous prices:
- The current starting price is 15 euros, which is reasonable given the history of starting and hammer prices.
- The average starting price of 16.45 euros also suggests that the current starting price is competitive.

4. Price trends:
- The price trend appears to be on the rise, especially for coins in good condition.

Taking all these factors into account, an estimated maximum purchase price for this coin could be around 55-70 euros, as this is a range that has been reached in previous auctions for coins of similar condition. However, since the market can fluctuate, a price of 60 euros could be a reasonable and competitive target.

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

1. Current Condition: The coin has a condition of 70 (VF-). This indicates that it is in an acceptable state, but not of high quality.

2. Previous Auction Prices:
- In previous auctions, the coin has had hammer prices that vary significantly. For example:
- A hammer price of 220 euros with a condition of 95.
- A hammer price of 35 euros with a condition of 80.
- A hammer price of 20 euros with a condition of 70.
- A hammer price of 50 euros with a condition of 75.

3. Price Trends:
- The average hammer price for this coin is 69 euros, suggesting that, in general, buyers are willing to pay around this amount.
- The average starting price is 42 euros, indicating that auctioneers usually start with lower prices.

4. Condition Analysis:
- Given that the coin's condition is 70, we can expect its hammer price to be closer to the hammer prices of previous coins with similar conditions. For example, the hammer price of 20 euros and the hammer price of 50 euros are relevant examples.

5. Maximum Price Estimation:
- Considering all these factors, a reasonable maximum purchase price could be in the range of 50 to 70 euros, as this price reflects both the current condition and the previous hammer prices.

Therefore, an estimated maximum purchase price for this coin could be 70 euros.