Based on the data provided, we can observe that the coin in question has had an average auction price of 25.93 euros in previous auctions. Additionally, its condition has been described as '80 (MBC+)'.

Considering that the condition is good and the average auction price has been 25.93 euros, we could estimate a maximum purchase price around that value or slightly higher, taking into account that the starting price in this auction is 18 euros.

Therefore, an estimated maximum purchase price for this coin in the next auction could be around 26-28 euros. It is important to note that this is just an estimate and the final price will depend on demand and other factors in the auction.

Based on the data provided, we can observe that the coin in question has had an average auction closing price of 53.33 euros in previous auctions. Additionally, it has been auctioned 5 times, selling in 4 of them. The coin's condition is described as 75 (VF).

When analyzing the coin's previous prices, we can see that it has had varied starting and closing values, with a maximum estimated price of 125 euros in a past auction.

Given that the coin is in a condition of 75 (VF) and has had an average closing price of 53.33 euros, we could estimate a maximum purchase price around 60-70 euros, considering the price fluctuations in previous auctions and the current condition of the coin. It is important to note that this is just an estimate and the final price may vary depending on other factors in the auction.

Based on the provided data, the coin in question has a starting price of 20 euros and is in a conservation grade of 75 (MBC). Historically, it has had auction prices ranging between 60 and 80 euros in previous auctions.

Considering that the average auction price has been 58 euros and the current conservation grade is 75, we could estimate a maximum purchase price around 70-75 euros. Given that the starting price is 20 euros, it is likely that the coin will fetch a higher auction price, especially if there is interest from collectors.

Therefore, my estimate for the maximum purchase price for this coin in the next auction would be around 70-75 euros.

Based on the data provided, we can see that the coin in question has had an average auction closing price of 20.71 euros in previous auctions. Additionally, the coin's condition has been maintained at a level of 75 (MBC) in past auctions.

Given that the starting price for the upcoming auction is 12 euros and the historical average closing price is 20.71 euros, we could estimate a maximum purchase price around that range. However, considering that the coin's condition is 75 (MBC), we could adjust that price slightly downwards.

Therefore, my estimate for the maximum purchase price of this coin in the upcoming auction would be around 18-20 euros. This takes into account the condition and historical closing prices.

Based on the data provided, we can observe that the coin in question has had an average starting price in previous auctions of 13.89 euros and an average closing price of 23.67 euros. Additionally, it has been auctioned 10 times in the past, always selling, with a conservation grade of 80 (MBC+).

When analyzing the previous prices of this coin, we can see that it has had a varied price range, with estimates ranging from 15 euros to 30 euros, and closing prices that have reached up to 40 euros on one occasion.

Given that the coin is in a conservation grade of 80 (MBC+), and considering its price history, we could estimate a maximum purchase price around 35-40 euros. It is important to consider that this is just an estimate and that the final price in an auction may vary depending on various factors such as demand at that specific time.

Based on the data provided, we can observe that the coin in question has had an average auction closing price of 27.91 euros in previous auctions. Additionally, the condition of the coin on this occasion is 80 (VF+).

Considering that the condition is good but not excellent, and taking into account the history of previous auction closing prices, as well as the starting price and the average auction closing price, we could estimate a maximum purchase price of around 35-40 euros for this coin in the next auction. It is important to note that the final price may vary depending on the demand at the auction and other factors that may influence the bidding.

Based on the data provided, we can observe that the coin in question has had an average auction closing price of 25.57 euros in previous auctions. Additionally, its condition has been maintained at a level of 80 (MBC+).

Considering that the starting price for the next auction is 12 euros and that the historical average starting price has been 20.54 euros, we could estimate that the closing price could be around 25 euros, which is the historical average closing price.

Given that the condition of the coin remains at a high level (80), and considering that in previous auctions it has reached closing prices above 25 euros, we could consider a maximum estimated purchase price of around 30 euros for this coin in the next auction.

Based on the provided data, we can observe that the coin in question has had a starting price in the current auction of 12 euros, with a conservation grade of 80 (MBC+). Additionally, it has been auctioned in the past on several occasions, with closing prices ranging between 12 and 110 euros.

The average closing price of this coin in previous auctions has been 50.37 euros, with an average starting price of 38.53 euros. We can also see that it has had estimated prices ranging from 12 to 300 euros, depending on the auction date and conservation conditions.

Given that the current conservation grade of the coin is 80 (MBC+), and considering the previous closing prices as well as the average closing price, we could estimate a maximum purchase price of around 100 euros for this coin in the current auction. 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.