Hi, I wanted to Know if there are any license plate experts around, I was Offered a 1911 porcelain Minnesota plate . Its dark blue and white letter with verticle MINN on left and 1911 On right , It is in very mint condition, I would just buy it to flip on ebay . He wants a pretty penny for it so I just wondered if there is a way to value these old plates. I do know the 1911 plate only had 20,000 made by the state. I would love to hear any plate collector advise before i purchase it. if wondering he wants 500.00 cash . seems extreme ? is there any meat left at that price, Thanks much ahead for any advise