Half-plate tintype of a group of Pennyslvania soldiers, one perched atop a cannon, and four men in civilian clothes. Interior inscription reads "Jo. R. Watson Jany 20th 1861, Aged 20 years & 6 months". Additional later pencil inscription reads "Keystone Battery". Housed in an elaborately carved Littlefield, Parsons, & Co. Union Case. Measures approximately 5-1/2" x 4-1/8". Note: The Keystone Battery was organized in 1861 in Philadelphia and first deployed as part of the defenses of the city of Washington. The battery fought primarily in the Virginia area during the Civil War and afterwards was reorganized and admitted into the Pennsylvania National Guard. The unit also saw action during the labor riots of 1877, the Spanish American War and the coal strike of 1902. Condition: Fine condition with some very slight rippling. Decorative stamped tin mat has some slight discoloration. Condition: Fine condition with some very slight rippling. Decorative stamped tin mat has some slight discoloration.