This is a sterling silver 2 piece carving set by Alvin in the Della Robbia pattern. The knife has a sterling handle and a stainless blade. It measures 10-1/4" long. The 2-prong fork also has a sterling handle and steel tines. It measures 8-3/8" long.
Both are marked "Sterling Handle". The knife is also marked "Alvin Stainless."
Condition: the blade has been re-sharpened (see last photo), the tines are a bit dark from age, typical surface scratches to the sterling.