The Slick is a Japanese camera, made of bakelite and with a telescoping lens tube. It produces 3x4cm exposures on 127 film.
According to Camera-wiki's Slick page, there are only two known surviving examples. That would make the camera pictured here number three.
[update: I've edited that page to reflect the existence of this camera]
The Slick is known to have been manufactured as early as October 1940 and as late as April 1943. This example came to me in a military-issue, olive-drab pouch, and was among other vintage militaria offered by the seller. Given that fact, along with the period of manufacture, I can't help but wonder about the history of this camera. Could it have been at Pearl Harbor on December 7th, 1941?