Warren Clock Co. Electric Clock (Ashland, MA 1912-1926) -
Brass base, glass dome. Original patina, enameled dial. Electo-mechanical battery powered clock w/unique mercury switched movement.

Tiffany Electric Mfg. Co NY Clock -
Brass case, glass dome. Original patina. Porcelain dial. Suspended torsion pendulum. 2 adjustable balls for speed regulation (early models). Double contacts.

Tiffany Never Wind Electric Clock -
Brass base in old patina, glass dome. Porcelain dial, torsion pendulum, double contact. Battery powered, electrically wound.