This stamp is specific to each silversmith. It includes the silversmith's initials and a symbol chosen by him framed in a rhombus.
The first maker's mark Christofle was registered with the Garantie de Paris in 1832. It was a rifle bayonet and the letters CC. In 1853, the new hallmark registered by the Maison was sesigned with a bee hovering under 3 stars framed by the two Cs that stood for Christofle & Cie. The two Cs would later be replaced by "OC" meaning "Orfèvrerie Christofle".
Since its founding, the main hallmarks of Maison Christofle have evolved.
The balance stamp, the silversmith's hallmark, was used by Maison Christofle from 1844 to 1935. Since 1935, the manufacturer's mark has been represented by an illustration of the knight from Chess surrounded by the initials "OC".