Silver Dog Whistle Labrador Weimaraner Spaniel. These Sterling Silver Dog Whistles are made from solid silver with hand made Gun dog Heads. The Silver gun Dog Whistles are fully hallmarked and measure 45 mm long and approx 12 mm deep in the dog head. The mouthpiece of the whistle could be engraved with an initial. The breeds available at the moment are; Labrador, Spaniel and Weimaraner. Please note the Dog whistles are a hand made item and may take several weeks for delivery.