How to know if I have a real or a fake Marcel Breuer Wassily Chair?

I have two Wassily Chairs with no markings or tags of any kind. How do I know if it is a reproduction or a real Marcel Breuer?
How to know if I have a real or a fake Marcel Breuer Wassily Chair?
I have two Wassily Chairs with no markings or tags of any kind. How do I know if it is a reproduction or a real Marcel Breuer?