This C220 was just CLA'd (Cleaned Adjusted and Lubed) and is in great condition.
The Mamiya C220 is a lightweight twin-lens reflex camera made in the early 1970s by the Japanese camera manufacturer Mamiya. The camera has interchangeable lenses ranging from 55 mm wide-angle to 250 mm telephoto and accepts 120 and 220 rollfilms. The rack and pinion focusing system with a bellows makes it possible for close-up photography without attachments. The straight film path has no sharp turns for absolute flatness of the film.
Variations of the Mamiya TLR line from the Mamiyaflex to the C330S Professional continued the evolution of the TLR camera with the final TLR, the c330S Pro.
Changeable lenses on medium format SLR and rangefinder cameras such as the Hasselblad line or Koni-Omega Press were the norm. The Mamiya twin lens reflex cameras are among the very few medium-format TLR cameras with interchangeable lenses.