Vintage Wet Your Whistle/Whistle for your Beer Mug

Ever wish you could whistle for a refill? WISH GRANTED!This vintage 50s giftware mug has a baked-in whistle (yep-it works) so you can go ahead and do just that! So weird/awesome! Mug is in great vintage condition with no chips/cracks/repairs. Approx. 4.5" high x 3" wide (at the mouth), and holds 12oz of your favourite refillable beverage! Makes a perfect gift.