The Motoka Six is a Japanese camera, which is only known from a text-only record of a past online auction. It is reported as a folding camera, presumably in 6×6cm format, equipped with an uncoupled rangefinder and a Magni C Anastigmat 80/3.5 lens. The auction's description mentions the company name "Motoka Optl. Co", presumably engraved somewhere on the camera.
Nothing is known about the actual maker. The similarity of the "Motoka" name with that of the Motoca 35 by Kashiwa is only superficial. A more useful hint is provided by the presence of a Magni lens, usually found on Crystar cameras.
The Motoka Six appears in no known written source.