This gorgeous camera is the first model of the Reflex-Korelle, designed and produced in Germany by Franz Kochmann. Beginning production c1934-35, it was one of the earliest medium format SLRs (6x6cm exposures on 120 film). It features interchangeable screw-mount lenses, shutter speeds to 1/500, and apertures from f2.8 to f32. It also has a waist-level matte screen finder with a magnifier, as well as a folding frame finder.
Reflex-Korelle cameras were imported and distributed in the USA by Burke & James of Chicago, and many examples say "Burke & James" beneath the Reflex-Korelle logo on the nameplate. Postwar models were called Meister-Korelle or Master Reflex (in the USA).
This camera is just beautifully made, so don't be surprised if I post more pictures of it.