Here is a very nice vintage lemon fork, made by R.W. Wallace & Sons. It is sterling silver and has three long spread tines and an openwork art deco design handle. This pattern is a difficult one to find.
The fork is marked: "STERLING" and "R W, stag head & S". The fork measures approximately 5-3/8"L. It is in excellent condition. R.W. Wallace & Sons, of Wallingford, CT, has been in business since 1875.