Anyone recognize this trim piece?
 

I found this item inside an enclosed trailer I bought from a lady that sold Pontiac Parts. It measures 51 1/2” long and is stainless, looks to me like it is a big car convertible top trim above the windshield but what do I know. No dents and would polish up nicely, any idea what it’s worth? As long as i’m asking questions.

I held this up to a GTO convertible and it was a lot wider than my A Body, is it B Body?