'36 3 window bus. coupe

I'm new to hot rods, old time Harley builder for the last 40 yrs. my question is I just bought a 3 window chev coupe, was it stock w/ 3 window, or did some guy fill it in?

 

Please do an intro at the top of the page or someone will try and beat you up. 1st rule of the HAMB. They had a 36 3 window. Here is a link to some pictures.

http://www.carnut.com/photo/list/chev/chev36/c363w.html

 

I know `35 MASTER ( they look like the `36 ) had a 3 window. Looked just like the 5 window, with the rear window filled. When you looked at it from the inside there was no sign of there ever being a window there. Not sure about the `36.

 

Also I forgot to add, the 36 3 Window could have been a Standard 109" wheelbase or a Master 113" wheelbase.