Nikon Nikkor 20mm f/3.5 AI-s Lens (Nikon F Mount) The flash unit works with

The flash unit works with no issues

There is very light separation on the edge of one of the rear groups

The film advance and rewind motor is fully operational

it is a C-41 film

First Year of Production: 1954

Nikon Nikkor 20mm f/3.5 AI-s Lens (Nikon F Mount) The flash unit works withGeneral Specifications: Manufacturer: Nikon Lens Mount: Nikon F (Pre AI, AI, AI s) Focal Length: 20mm Max., Min. Aperture: f 3. 5, f 22 Filter Thread: 52mm Focus Type: Autofocus (Screw Drive), Manual Overall Condition Good (M1 O2 C2) Mechanical: The aperture ring and focusing helicoid both rotate smoothly. Optical: The lens is mostly optically clear, with a small amount of dust, and no fungus, haze or separation. Cosmetic: This exterior of the lens is