1900-10 american late victorian era ornamental wrought bronze metal exterior residential mechanical doorbell thumbtwist lever

original early 20th century american antique victorian era decorative wrought bronze metal residential mechanical doorbell thumbtwist lever or handle possibly fabricated by reading or the penn hardware company. the stamped or pressed bronze backplate features a simple embossed beaded border with two opposed floral arrangements between the screw holes. the unornamented rotating handle is tightly affixed to the backplate. measures 4 x 2 1/4 inches.