Rolleiflex 3.5B TLR Camera w/75mm f3.5 Xenar Lens AS IS

This is a nice Rolleiflex medium format twin lens reflex camera that is being sold AS IS for parts or repair. It has a bright 75mm 2.8 Heidosmat viewing lens and a 75mm f/3.5 Schneider-Kreuznach Xenar taking lens. Based on its design, dimensions (about 99mm wide), and serial number (1716200), this appears to be the popular Rolleiflex model 3.5B MX-EVS. About 91,000 copies of this model were made between 1951 and 1954.
The camera is in overall very good cosmetic condition but has mechanical issues so is being sold is for repair or parts. The film advance and shutter cock mechanism is stiff, and when film is loaded, the film counter does not advance off the number zero. At the slowest aperture speeds, the shutter will stay open until the film advance is turned. These issues together indicate that the advance mechanism on the right side of the camera requires repair.
The shutter is oil free, snappy, and fires on high speed, but below 1/60 second, the shutter stays partially open until you turn the film advance. The viewfinder opens fine, focus is smooth, and the features are crisp. Shining a bright light inside shows lots of dust on the lenses, but they appear haze and fungus free. The aperture and speed can be decoupled by depressing and turning 90 degrees the center button of the aperture dial and the shutter speed can be turned, and correctly controls the shutter. There is a little grime and dirt in the knob knurls. There are some stains or bumps on the metal in the bottom corner of the metal of the viewfinder (where it reads Super Slide)