Based on the provided data, we can observe that the coin in question has had an average starting price of 106.06 euros in previous auctions, with an average closing price of 158.07 euros. Additionally, it has been auctioned a total of 19 times in the past, out of which it has been sold 16 times.

The conservation status of the coin is described as "BC+" (30), indicating that it is in an acceptable but not excellent condition.

When analyzing the coin's previous prices, we can see that it has had significant variations in its starting, estimated, and closing values. However, generally, the estimated prices have been around 150-200 euros, with some exceptional cases where a closing price of up to 350 euros has been reached.

Given that the coin is in an acceptable condition and has had closing prices in the range of 150-350 euros in the past, and considering that the starting price this time is 30 euros, we could estimate a maximum purchase price around 250 euros. This takes into account that the average closing price has been 158.07 euros and that the coin has achieved higher values in previous auctions.

It is important to note that the final auction price will depend on various factors, such as the demand at that specific moment, the competition from other bidders, and the buyers' perception of the coin's value at that time.