It's a Werra made in East Germany, possibly microscope camera or other medical use as above.
I'm 100% plus it's Werra as that film counter on the bottom is unique as is the body shape. These cameras were made by Carl Zeiss in their Jena lens factory, the only CZ cameras to be made there and not in one of the original Carl Zeiss Ikon camera factories.
It's quitee arly as they company couldn;t get Compur or Protor shutters easily after the mid 1950's. Werra cameras are well designed and ahead of many West Geraman designs as were KW's Praktina cameras.
Ian