large lot of matching antique american functional cast bronze interior residential "teapot" window sash locks. the small disc-shaped finger latch is push down to release the swinging arm that engages a keeper. the simple, yet elegant sash locks contain ball finials and lightly incised vertical lines closely spaced together along the base, "turret" and latch. likely fabricated by p. f. corbin or possibly the sargent hardware company. date to the 1880's. priced for the lot. keepers lost long ago. measure approximately 2 1/2 x 2 inches.