This is a Cabinet Card, which was a popular photo format in the 1880s. They were first used in the 1860s for landscape views, eventually adapted to portraits, and had greatly declined by the 1890s.

Identified as E. S. Sardiner. Photographer is unknown.

Standard-size Cabinet Card, measuring about 4.5 x 6.5 inches.

Will be shipped safely and securely! All of my items are protected in archival sleeves and packaged in rigged cardboard.