Swedish Import Mark
Swedish import marks consist of a mark with either one circle or three smaller conjoined circles, each containing three ornate crowns, and beside it a hexagonal 'S'. Other Swedish import marks denote 'GABF' and a freestanding crown.
Georg Jensen pieces can be found with Swedish system year marks starting from 1977. The dating system has been used in Sweden since 1759, and uses codes to indicate year of production (for example: 'C10' indicates 1977).