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, but not the best possible condition.

2. Auction History:
- The average hammer price for coins of similar condition (80) has been 200 euros in a previous auction (2020-05-26).
- In other auctions, hammer prices have varied, but the range has been from 51 to 420 euros, depending on condition and demand.

3. Starting Price and Average Hammer Price:
- The current starting price is 90 euros, which is lower than the average hammer price of 170.22 euros.
- The average starting price of 102 euros also suggests that the current starting price is competitive.

4. Recent Trends: In the most recent auctions, hammer prices have shown an increase, especially for coins in good condition.

Based on these factors, an estimated maximum purchase price could be in the range of 200 to 250 euros, considering that the condition is good and there is a history of hammer prices that supports this estimate. However, since the starting price is 90 euros, it could be a good opportunity to acquire it at a lower price than its market value.

Therefore, a reasonable maximum purchase price could be 250 euros.

To estimate a maximum purchase price for the coin that is going to be auctioned, we can consider several factors based on the provided data:

1. Starting price: 70 euros.
2. Coin condition: 70 (MBC-), which is a medium condition.
3. Auction history: The coin has been auctioned 54 times, of which it has sold 40 times. This indicates good demand.
4. Average starting price: 371.36 euros.
5. Average hammer price: 502.97 euros.
6. Previous hammer prices: There are several past hammer prices that varied significantly, but some of the highest are 2400 euros and 2651.4 euros in better condition.

Given that the condition of the coin in question is 70 (MBC-), which is lower than the higher conditions that have reached very high hammer prices, but still an acceptable condition, we can make an estimation.

Considering the average hammer price of 502.97 euros and the fact that condition is an important factor, a reasonable maximum purchase price could be in the range of 300 to 500 euros.

However, since the starting price is 70 euros, and considering the demand and sales history, an estimated maximum purchase price could be:

Estimated maximum purchase price: 400 euros.

This price reflects a balance between the condition, price history, and current demand.

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

1. Coin Condition: The coin has a condition of 70 (MS-), indicating that it is in acceptable condition, but not of the highest quality. This will affect the maximum price that can be offered.

2. Auction History:
- The average hammer price for similar coins has been 203.77 euros.
- In previous auctions, coins with a similar condition (70) have reached hammer prices that varied, but some examples are:
- 110 euros (2020-09-17)
- 85 euros (2020-07-02)
- 130 euros (2022-10-18)
- 180 euros (2023-01-31)

3. Starting Price and Estimates:
- The current starting price is 30 euros, which is quite low compared to previous hammer prices.
- The average starting price for similar coins is 125.58 euros, suggesting that the current starting price could be a good opportunity.

4. Recent Trends: Recent auctions show that there is a consistent interest in coins of this reference, and the hammer prices have been relatively high compared to the starting price.

Based on these factors, an estimated maximum purchase price for this coin could be between 150 and 200 euros, considering that the condition is a limiting factor and that interest in the coin may influence the final price.

Therefore, a reasonable maximum purchase price could be 180 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 (MBC+), indicating that it is in relatively good shape. This suggests that its value should be above that of coins with lower conditions.

2. Previous Auction Prices: The average hammer price for similar coins has been 304.37 euros, indicating that there is a market willing to pay significantly higher prices than the starting price.

3. Price Trends: By observing previous hammer prices for coins with similar conditions (80-85), we can see that they have reached hammer prices of up to 160 euros in recent auctions.

4. Starting Price and Average Starting Price: The current starting price is 60 euros, and the average starting price for similar coins is 88.02 euros. This suggests that the starting price is reasonable, but it also indicates that there is potential for an increase in the hammer price.

5. Sales History: The coin has been sold in 96% of the auctions it has participated in, indicating high demand.

Based on these factors, an estimated maximum purchase price could be in the range of 150 to 200 euros. This is based on the historical hammer prices for coins of similar condition and the price trends in the market.

Therefore, a reasonable maximum purchase price could be 200 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 70 (VF-). This is an important factor, as coins in better condition tend to fetch higher prices.

2. Current Starting Price and Previous Prices: The current starting price is 100 euros. In previous auctions, the average hammer price has been 121.93 euros, indicating that similar coins have sold for above their starting price.

3. Sales History: The coin has been auctioned 86 times, of which 78 have been successful sales. This suggests there is consistent interest in this coin.

4. Previous Hammer Prices: Looking at previous hammer prices for coins with similar conditions (70-80), we can see that they have reached hammer prices that vary, but some have gone for 140 euros or more.

5. Recent Trends: In the most recent auctions, hammer prices have shown a range that may indicate an increase in interest or value for the coin.

Based on these factors, an estimated maximum purchase price could be in the range of 140 to 160 euros. This is based on the historical hammer prices for coins of similar condition and the demonstrated interest in previous auctions.

Therefore, a reasonable maximum purchase price could be 150 euros.

To estimate a maximum purchase price for the coin that will be auctioned, we can consider several factors based on the provided data:

1. Starting Price: The starting price is 110 euros, which indicates the starting point for the auction.

2. Auction History: The coin has been auctioned 18 times in the past, of which it has sold 13 times. This suggests there is considerable interest in the coin.

3. Previous Hammer Prices: Previous hammer prices have varied, but there are several examples where the hammer price has reached or exceeded 110 euros. For example:
- In 2020, it was hammered at 110 euros.
- In 2018, it was hammered at 110 euros.
- In 2014, it was hammered at 155 euros.

4. Average Hammer Price: The average hammer price is 126 euros, indicating that, on average, similar coins have reached a price above the starting price.

5. Condition: There is no information about the condition of this coin, which may affect its value. However, since there have been successful sales in the past, we can assume that the coin has a reasonable value.

6. Price Trends: Hammer prices have shown a trend of being above the starting price, suggesting that bidders are willing to pay more.

Based on these factors, an estimated maximum purchase price could be in the range of 130 to 150 euros. This is based on the average hammer price and previous hammer prices that have exceeded the starting price.

Therefore, a reasonable estimated maximum purchase price could be 150 euros.