I have seen these used for many different things such as serving salad dressing, olives, candy, and pickles.  Wonderful and useful serving trays fron Rogers Insilco.  Is stainless steel, which means it will keep it's shine.  Is signed "Robers-Insilco, Fashion Stainless" on the bottm and also has a foil label that reads "Product of Japan".  In excellent condition.