Based on the provided data, we can see that the coin is in a conservation state of 70 (MBC-), with a starting price of 30 euros and an average auction sale price of 125 euros in previous auctions. Since it has been auctioned once in the past and was sold on that occasion, we can consider that there is interest in this coin.

Considering the conservation state and the previous average auction sale price, as well as the fact that it was sold in the previous auction, we could estimate a maximum purchase price around 110-120 euros. It is important to note that the final price will depend on factors such as demand at the time of the auction and the willingness of buyers to bid on this particular coin.

Based on the data provided, we can observe that the coin has had an average auction price of 212.49 euros in the past. Additionally, it has been auctioned a total of 56 times, out of which it has been sold 44 times.

Considering that the coin's condition is 75 (VF), and the average auction price has been 212.49 euros, we could estimate a maximum purchase price around that value. However, given that the starting price in this auction is 75 euros, it is likely that the final auction price will not significantly exceed that value.

Therefore, my estimate for the maximum purchase price for this coin in the next auction would be around 220-230 euros. It is important to note that the final price may vary depending on the demand at the auction and other factors that may influence buyers' decisions.

Based on the data provided, we can observe that the coin in question has had an average auction price of 132.33 euros in previous auctions. Additionally, its condition has been described as 70 (VF-).

Considering that the condition of the coin is relatively good (70), and that the average auction price has been 132.33 euros, we could estimate a maximum purchase price around 150-160 euros. This is because the coin has performed well in previous auctions and its condition is acceptable.

It is important to note that the final auction price will depend on factors such as demand at the time of the auction, competition from other bidders, and the willingness of buyers to pay a higher price.

Based on the provided data, we can see that the coin in question has a conservation grade of 70 (MBC-), with a starting price in the upcoming auction of 18 euros. Additionally, it has been auctioned four times in the past, with an average starting price of 26 euros and an average closing price of 58.75 euros.

We also have information on previous auctions of this same coin:

1. In the auction on October 29, 2015, the coin had a starting price of 45 euros, an estimated price of 70 euros, and closed at 75 euros.
2. In the auction on May 28, 2014, the coin had a starting price of 15 euros, an estimated price of 25 euros, and closed at 15 euros.
3. In the auction on June 3, 2021, the coin had an estimated price of 9 euros and closed at 15 euros.

Given that the average closing price in previous auctions has been 58.75 euros and the coin has sold in all previous auctions, we could estimate a maximum purchase price around that value. However, considering that the conservation grade of the coin is 70 (MBC-), which is a medium-low grade, and the starting price is 18 euros, we could consider a maximum estimated purchase price of around 50-60 euros.