Early French Phone La Pile Hydra

This phone was either manufactured for or branded with the Pile Hydra (Hydra Battery) logo. In the late 19th century, telephones required local batteries to power the transmitter. The Hydra "hermetic" dry pile was one of the most successful French innovations of the time, and its branding appeared on many high-end wooden telephone sets of that era. The presence of the "Hydra" branding on the wooden cabinet indicates it was likely a premium or private-installation model rather than a standard-issue government set.