Vintage Trader Vic’s 1940s Skull Mug

Vintage 1940s Trader Vic’s skull mug. 
What makes this mug special is the openings under the chin. The intention is to have dry ice under there so smoke comes up through the openings of the teeth and eyes. 
There is a small chip on the chin, but you don’t really see it when it’s sitting properly. 
Dimensions: 
7” L X 4.5” W X 5” H 
Items may show wear consistent with age and use, and are in good vintage condition without any major damage unless otherwise stated.