a.k.a. Skulls & Bamboo Mug For Three Dots and a Dash Blue
This is a tall all dark blue rectangular mug with three sides made of bamboo and one of stacked skulls. It is made to resemble the entrance to the bar, whose wall of skulls is illuminated in blue light as you walk down the stairs. There is an "Easter Egg" of sorts honoring Paul McGee (formerly of Three Dots) at the bottom of the wall where a skull has Mcgee's signature beard. The back reads: "Three Dots and a Dash, Chicago, IL." Used to serve their house cocktail, the Three Dots and a Dash.