A basic 6×9 folding roll film camera uses the 620 film format. Kodak introduced the 620 film in 1931 as an alternative to the 120. They are nearly the same film on a slightly different all-metal spool.
There are many Kodak cameras with a model name “Junior”. If you mention “Kodak Junior”, you might mean one type in a group of over a dozen different cameras. This Kodak Junior 620 is one of the first models. The Production was begun in 1933 by Contessa Nettel, Germany and was terminated in 1939. (In Germany)
The lens is Kodak Anastigmat 1:7,7/10,5cm. The shutter speeds are T, B, 1/25, 1/50, 1/100, 1/125. You may notice a self-timer but not a flash contact because there was no ascension. The shutter release is as usual on the shutter housing, which also has a cable-release socket.
The camera has a waist-level and a frame eye-level viewfinder
After WWII, Kodak Junior camera production continued mainly in England and France. No markings about the manufacturer can be found in this version either. It looks older, but you should not knock a dog looking at the fur. Presumably, it is only a cheaper version. Differences in details also indicate that their origin is not the same.