Chuck Koby (real name: Charles Kobielnik) seems to have been from Pennsylvania. He had one single on Malvern Records: Lightness And Darkness b/w Sagebrush (an intrumental).
This acetate has a longer version of Lightness And Darkness (uploaded here by a previous owner: ) and this nice version of Johnny Be Good on the flip. It was sold a couple of times on Ebay, always the same one, passing from hand to hand, and ended up in my collection a few years ago.
Chuck Koby
Lightness & Darkness / Johnny Be Good
Unreleased acetate
196?