Cleveland Welding AND Snyder built frames in this fashion if I remember right. I know the REAL *Zep* (Snyder) frames have the ears on the frame itself and the Fastback Sport frames (Also Snyder)had them on the braces., As far as variations on the CWC models, I'd have to turn back to the CABE to assure I'm not misleading Information however I've owned both models with ears in frame and on braces and found similarities and differences in each, as well as a VARIETY of badging in my research to determine various models.
*Cliffnote* CWC Zeps are NOT the same as Snyder. The frame is very different and the bike overall is only resembling in that it too is a bicycle with a tank
That's not to say Cleveland didn't make something very similar to this frame design, however.
If someone could nudge Bri-In-RI, perhaps he'd know, having given me my first Zep style frame. (Snyder)