Manufactured from 1936 to 1937, this model was the first Retina made with a chrome top plate.
Usually fitted with an Anastigmat Ektar f/3.5 5cm. lens like my one but also available with Zeiss Tessar or Kodak Pupillar. The shutter is a Compur Rapid.
I was fortunate that this one came with the little screw-in shutter release plunger, this is so often missing on the early Retinas.