Reproduction of an antique dating from the 1880's.  Cast bronze, originally made by Sargent.  Available in polished bronze (US9A) and hand antiqued bronze (US9B).  3 3/8 x 1 3/8";  inside opening on top 3/4 x 3/8"; bottom, 1 1/8 x 7/16"; center bridge is 1/8"