Window glass question

[3739ford]

Hey Guys,

On the passenger side my window glass has a metal frame around the glass while on the driver side the glass has no frame around it. Which way is correct for 39 Ford Pickup 1/2 ton?

 

[42 1/2ton]

I checked in the 1942 Body Parts book (don't have one for 1939) and 1942 does not have the metal frame. I have some windows out of a 1947 and they have the metal frames. Just a guess but maybe the post war truck had the metal frame on the door glass and prewar did not. I am sure someone will chime in and verify whether this is correct or not.