Camera in prefect working order, Shutter is accurate, Lenses and cosmetic in prefect condition.
Production period : 1932 - 1938.
When looking into the waist-level finder, the photographer finds a relatively clear ground glass screen. To help keep vertical lines vertical, this Rolleiflex has a built-in spirit level, visible in the finder. 
It is with a Heidoscop-Anastigmat 7.5cm f3.1 viewing lens.