Based on the provided data, we can observe that the coin in question has had an average starting price in previous auctions of approximately 198.46 euros, with an average closing price of around 295.75 euros. The condition of the coin has been described as '85 (VF+/XF-)'.

Additionally, several previous prices of the coin in past auctions have been recorded, with estimates ranging from 6 euros to 6000 euros, depending on the date and condition.

Given that the coin has a good auction history and has achieved significant closing prices in the past, we could estimate a maximum purchase price around 350-400 euros, considering the condition and historical demand for the coin. It is important to note that the final price will depend on factors such as competition in the auction and the interest of potential buyers at that specific time.