Antique Solid Mahogany Princo Sphygmomanometer Patent 1923 Repurposed Box

Inside is 14 1/2" long x 3 3/4" deep x 2" tall. Sides are 5/16" thick mahogany and assembled using barefaced housing joints. Nice clean label with a patent date of August 7, 1923. Original hardware was cleaned and polished and is in good working order.Refinished with MinWax Satin Varnish and hand polished to a soft luster with 0000 steel wool and paste wax.