Vintage Wallace American Sterling Silver Nautical Clam Shell Dish measuring 6 ¼” long by 4” wide by 1 ¼” tall, this American Sterling Silver Clam Shell Dish by Wallace is shape #393, and it weighs 2.58 troy ounces or 80 grams. On the bottom are two ball feet and a maker’s mark that reads “Wallace Sterling 393.” Aside from some very light surface scratches, the condition is great condition.