Kodak Duaflex II camera with a plastic case. This is a lovely art deco camera dating from 1955-1960. It takes 620 roll film.

For details see:

http://www.artdecocameras.com/cameras/kodak/duaflexii/

There is also a manual available here:

http://www.cameramanuals.org/kodak_pdf/kodak_duaflex_ii.pdf

This is a popular camera for “through the viewfinder” photography; build a simple black card tube around the viewfinder of the Duaflex and then photograph the viewfinder with a digital camera.

See here:

https://en.wikipedia.org/wiki/Through_the_Viewfinder_photography

and here:

https://blog.jpegmini.com/photography-tutorial-shooting-through-the-viewfinder/