This is a Royal Crest sterling silver fork in the Castle Rose patter by designers: Grosvenor N. Allen and Lloyd E. Ressegger.  It is approximately 6 3/8 inches long and weighs 30.99 grams.  It is in vintage condition with wear and tarnish commensurate with age and use and no attempt has been made to clean or polish it (see pics as they are a large part of the description).  Thanks for looking!