Atlas King was the tape label of Smersh, founded by Chris Shepard and Mike Mangino in 1981. Until 1991 the label had no official name and the cat.no. looked like this: SC000, from 1991 it was officially Atlas King and the cat.no. looked like: AK000.
The last release with the SC prefix is SC032, the first with the AK prefix is AK033.
In 1994 the last tape was released.
The follow up label is Mirandette Popular