Based on the data provided, we can observe that the coin has had an average auction closing price of 135.19 euros in previous auctions. Additionally, the condition of this coin has been described as '70 (MBC-)'.

Considering that the condition of the coin is relatively good (70 on a scale of 0 to 110) and that the average auction closing price has been 135.19 euros, we could estimate a maximum purchase price around 150 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 may vary depending on factors such as demand at the time of the auction and the willingness of buyers to bid on the coin.