The Dressing Spoon, sometimes referred to as a Platter Spoon, differs from a regular Serving Spoon in that it is longer, up to 14 inches in some cases. Also, some of these have a "button" on the back which is to keep them from sliding into the food when resting on the side of the dish.
A lovely serving piece, especially the design treatments to the tines in some patterns. The Cold Meat Serving Fork is a different piece from Chipped Beef Fork. Here are some examples of the piece.