Chrome identity help

I'm baffled. I have this piece that I just cannot identify. It's 25 inches long, and fits something with a slight curve. The large end looks like it fits up to another. I could be something from a rear fender top, top of a hood (not Hudson) Because of the curve on the bottom, I've ruled out a quarter panel. There are NO parts numbers. Any help? I've looked at Chrysler, Olds, Buick all of them...Mid-50's-early 60's?

 

'60's Bird maybe?? Hell, I don't know....

 

If it was Ford, it would surly have a part number starting with a "C"

 

I got it...It's a 1951 Olds which was the first year they went to a rounder tail light. Thanks all