Dates of major use: 1855-1860s
Inventor: Adolphe-Alexandre Martin (1853), Hamilton A. Smith (1856)
A tintype is a monochromatic direct positive image that is formed on a thin metal plate covered with a black varnish. They were often hand-coloured. Tintypes can be presented in paper mounts to be slid into albums or protected in American cases under glass.
Beautiful!