A hand cut whistle made from a stag horn tyne (the tip of the antler) a single tone whistle giving a high pitch. Popular in many outdoor pursuits but especially with dog trainers. All stag horn whistles are hand made from natural horn. This inevitably means that they all vary in size, shape and sound. 
 
No pea, High pitch
Real Stag Horn
Single Tone
PLEASE NOTE these are handmade from Natural Product so Whistle may vary from Picture in size and color