I guess I should’ve known that this is stuff that people own, sell and collect. From what I understand, the items in these collections originally come from World War II veterans who brought the stuff over from Europe after the war. Perhaps their families sold it later on. My grandfather certainly brought back some of this stuff, and my family still has it buried away.
I suppose it makes sense to eventually sell it to a collector or salesman who specializes in this stuff.
But from there, who buys it? I can only imagine. 
