Large Vintage Working Whistle in 14k

Circa 1950 and as close to a life-sized coach's whistle as I've ever seen in solid 14k yellow gold. It has a pretty piercing tweet, possibly loud enough to quiet a rowdy playground, or at least alert your team the lunch orders have arrived. Details: Measuring approximately 1 3/16" long, not including the bail and jump ring, and 1/2" wide. Marked for 14k on the underside of the lip, weighs approximately 7.2 grams. Condition: In excellent condition with a light patina. The 14k hallmark has created a very slight divot on the underside, not noticeable when worn.