Yes! The badge is for a distributor, J Silberg (Silberberg) of Hamburg, Germany. Sewalot has a picture of the badge on the Wertheim Superba page. This is not a Wertheim machine, though. Silberg sold machines by many manufacturers, some using that "mermaid holding an anchor" decal set with either the "Superba" or "Gloria" names. The framing decal on this one's arm looks like the "Superba" version. The front slide plate is like the Anker-made "Gloria", but the stitch regulator on the shoulder seems different.
Did you get the machine?