GROUP OF THREE NORWEGIAN PLIQUE AU JOUR AND ENAMELED VIKING SHIP SALTS: The smallest is the plique au jour by David Andersen, 2 1/2''l. x 1 1/4''h. The next is green enameled, also hallmarked and stamped 925. The third and largest ship is a master salt in blue enamel with no markings, 4 1/2''l.