Image comes from an unknown collector out of Stamford, Connecticut, and it's labeled "M. Picking." This is a tintype, also known as a melainotype or ferrotype; a photograph printed on a thin piece of metal that had been coated with lacquer or enamel. They were most popular during the 1860s and 1870s. This is known as a 1/16 plate tintype. Paper frame measures about 2-3/8 x 3-7/8 inches.