Prior to the issuance of official SDPD ID Cards, employees were assigned duty badges.
Some of the more unique badges can be found below. These badges average more than 70-years-old and are depicted in "as in condition."
Circa 1940's
Hallmark Entemann Rovin
This badge is 3/4 scale of a duty badge. Not much is known about why these were issued. Perhaps they were pocket badges.