i would say those are worth alot of investigation to determine there worth. dont rush a sale, you will probably loose. i would seek several sources about them. just because their professor somebody or an so called expert skinner doesnt mean you should trust them. dont let them "borrow" it for research. collectables are kinda strange in respect to what is worth the big bucks and what isnt. for example, civil war stuff, confederate stuff is worth ten times more than what the same union piece is worth. but antiques roadshow would be a good start.