John Deere Sign, Nothing Runs Llke a Deere

Description

Measures almost 12 inches in diameter.
Looks like new except that it has been slightly bent -
not really a bend, like there is a crease,
but more of a curve like it had been
in a drawer that was too small for it.
I assume this is an original product,
maybe one that someone had put into a drawer for safekeeping,
but eBay's question about that got me to wondering.
How do I know whether it is an original or vintage item?  Maybe it is so clean because someone took a new one years ago and stored it at home so that it was never used.  On the other hand, maybe it looks new because it is, and it is a reproduction.  Perhaps if it were a reproduction I would know that because
I or a company for which I work reproduced it?  If anyone out there knows how to tell a reproduction, and they have time and are so inclined,
I would appreciate an email telling me how to tell.