1 Pfennig - Berlin-Wilmersdorf Elektr. Werk Südwest AG

Elektricitätswerk Südwest AG was a Berlin utility company that issued token coinage for internal use — most likely for vending machines or canteen transactions on company premises. Such corporate pfennig tokens proliferated in Germany during the early twentieth century, particularly in the years surrounding World War I when small-denomination coinage vanished from circulation as hoarding stripped the monetary system of its most mundane metal.

Wilmersdorf was incorporated into Greater Berlin only in 1920, which gives that geographic designation in the issuer name a useful terminus ante quem for dating the token's origin.