Kodak Instamatic 104
These cameras were manufactured from 1965-1968, and this one appears to have been used solidly since then.
Specs : f/11 43mm lens, shutter speeds of 1/40 and 1/90, uses 126 cartridge film giving a negative size of 28x28mm. Originally sold for US$15.95.
They used flashcubes rather than individual bulbs (invoking memories of my earliest photographic attempts).
Kodak Bantam Colorsnap
The Kodak Bantam range was produced from 1955 to 1989. The Colorsnap was UK-made and designed to encourage people to use Kodachrome colour film.
The Pentax S1 was manufactured from 1961 - 1966. Before this one landed in my hands, it was used for several years by my father to capture the tears and joy of Formula One motor racing around Australia.
It featured (despite what was advertised at the time) shutter speeds up to 1/1000th of a second.