GUEST: My grandfather was a colonel in the Air Force, and this was given to them by someone who was an emissary to China in the 1930s and '40s.

APPRAISER: It is a map of China, and it looks very old because it is very old. It actually was first printed in 1584, and it's by a man named Abraham Ortelius, who's called the father of modern cartography, because he issued the first modern atlas. This map in this condition I think is probably worth about $3,000.

GUEST: Oh, goodness, that is great. Yeah, so that's pretty good.