I used the "Majolica"fish (Japanese?) for cocktail sauce with an ivory-handled sugar shell. All flatware with ivory, mother-of-pearl, or bone handles needs to be washed carefully and never, ever put in a dishwasher. Do not even submerge the handles in water, just wash as gently as possible with warm water and a touch of gentle dish liquid on a cloth or sponge.
I used the grape cluster tray, a wine-related motif we collect, for saltines. The champagne glasses have a silver base with an etched glass insert that comes out for washing. I would guess they are from the 1930's or so.