group of four matching original "new old stock" ornamental cast bronze circular-shaped doorbell cover or backplate possibly designed and fabricated by the russell & erwin or the p. & f. corbin mfg. co., new britain, ct. the dome-shaped unused bronze exterior house "trimmings" would be outfitted with a centrally located bush button to engage the bell located inside the house. the push button covers contain a nicely aged and uniform surface patina throughout. four matching bell plates available. priced individually. measures 2 3/8 inches in diameter x 1 inch in depth.