I have a Quezal Jack In The Pulpit Vase. How do I go about finding out if it is the real one or a reproduction one. Also how would I go about finding out how much it is worth? It is 15 5/8" tall...

I'm trying to find out how much this Norman Rockwell figurine is worth. I was told one went for $1500 at an auction. I believe it is from the 1980's and only a few were made.