Silver Plate. These two piece are from the 'Ondulation' design series designed by Luc Lanel for Christofle in the 1930s.
Pieces of this design model were used on the Iconic & legendary Normandie Liner.
Luc Lanel was an artisan ceramicist & designer who was commisioned by Christofle during the 1920s & 30s to create designs for their table wares & Dinanderie pieces.
French, circa 1930s.