This is an old advertising piece, a "Pocket Drinking Cup" made by the Meriden Britannia Co. in Meriden, Conn. This company was founded in 1852 and produced silverware and other silver pieces from the 1850's until 1898 when it merged with 13 other independent companies to later become the International Silver Co. The Meriden Britannia Company manufactured similar pocket drinking cups during the American Civil War. This particular cup belonged to a family relative from the 1890s and has a cartouche that is engraved with three letters (CRC). There are also two letters (A.C.) etched in the bottom of the cup. The cup is in excellent condition and yes, it still holds liquid. The cup measures 3" high x 2.5” at top, and collapses to 1.25” high. It weighs 4.0 oz. The round tin case measures 2-3/4" in diameter, weighs 1.6 oz, and is dark copper toned with gold lettering stenciled on the cover. The paint and lettering on the container is in excellent condition for it's age. Photos serve as part of the description.