Taken from https://www.kenrockwell.com/nikon/28mm-f35-ai.htm:
This was Nikon's least expensive professional 28mm lens in the 1970s. This particular AI version was made from 1977-1981. This lens is from the days before Nikon made anything except very expensive professional equipment. It offers the same optical quality as the more expensive and heavier f/2.8 and f/2 28mm AI lenses. The newer 28mm f/2.8 AI-s offers less distortion and the f/2 offers more speed for use in dim light, but for daylight use, this f/3.5 lens is wonderful.
Includes original Nikon front/rear caps. It will be shipped via USPS Priority Mail which includes insurance, takes 2-3 business days & includes tracking