Interesting. I'd never seen one of these before:
And information in English is quite scarce. Apparently, they were Konica's first rangefinders with a built-in light meter, and the direct precursor of the Auto S series. The "S" was introduced in 1959, the S II in 1961, and they may have been sold only in Japan. There was also a Konica "J" at about the same time as the "S", which looks like the same camera, but without the light meter.