Thanks all for your replies and thoughts on this piece! I had thought maybe it was an inside showroom sign,but I think maybe you are right about it being a fantasy piece a Pontiac fan has made for his man cave!It is well made for a fantasy piece,alot of detail.I enjoy this side of collecting and selling vintage items from all genres,research is enjoyable!You never stop learning! The term 'Fantasy piece'is new information for me,great to put a name to these items.
In any case,it has some vintage to it,I will sell it for its aesthetic value,thrilled if it finds a new man cave to reside in...a beer or two downed pondering it's past life!
Thanks again for your expertise,connecting with passionate collectors from around the world is a pleasure!
Cheers from Oz,
Sigrid