Do you know what vehicle this panel is from?

This rear window panel came in a pile of parts with a Model A I bought.
I do not think it's Ford, just by the nail area that would be the insert panel area.

The window opening is approximately 27 x 10 inches.

 

The rear window opening looks like '28-'29 fordor. Maybe the nail strip is different between Murray and Briggs?

 

does a Model A have the reveal around the window?

 

Yea, but the fordors aren't as rounded. Might also go for '30, '31.

 

From photos I see, the reveal gets larger at the bottom of the window on an A.

This is the same size all around.

 

Found this pic, labeled 1929 Ford. Even the right color.

 

Sorry about the size.