Kodak Twin 20 camera with case, dating from 1959-1964. The Brownie Twin 20 has a moulded plastic body and can use a screw and pin flash. An unusual feature is an optical direct vision finder in addition to a brilliant finder. It offers a choice of EV13(f/11), EV14(f/16) and EV15(f/22) plus focusing for close-ups(4-6ft), groups(6-12ft) and scenes(12ft-inf).

The camera takes 620 film but can be adapted to use 120 film. See the instructions here:

http://britishphotohistory.ning.com/profiles/blogs/shooting-120-film-in-your

See here for more details about this camera:

https://www.brownie-camera.com/48.shtml

The manual for this camera is here:

https://www.brownie-camera.com/manuals/btwin20/index.shtml