ETERNA, founded Feb 3rd 1947 as folder for Classical music, political songs, folk, some jazz and religious recordings on Lied Der Zeit GmbH, which is the predecessor of Deutsche Schallplatten Berlin.

This label is essentially defunct, however, reissues usually appear on Berlin Classics.

List of sister labels:
AMIGA
AURORA (2)
LIED DER ZEIT
LITERA
NOVA
SCHOLA

The release year can usually be recognised from the last two figures of AG 511/1/xx on the cover. It's the legal print permission for the sleeve. Though, please note that reissues do not come with the original release year. The reprint year belongs to the notes.

Items with catalogue numbers like [x x0 xxx] are mono-releases, while catalogue numbers like [x x5 xxx] or [x x6 xxx] indicate stereo sound. This applies to all releases on Deutsche Schallplatten Berlin sub-labels, at least before 1991.