Koi with three or more lines of very shiny (mirror-like) scales along each side of the dorsal fin. To be classified in Kin-Gin-Rin A, the base variety must be Kohaku, Sanke or Showa. Kin scales are gold (over yellow, red or brown), gin scales are silver (over white, grey or black). Probably a natural occurrence, Eizaburo Hochino is credited with the first discovery of kin-gin-rin in 1929.