Electro-Motive Division (EMD) GP9 as it appeared circa 1979 on the Butte Anaconda & Pacific. This railroad is a fascinating short-line that is still in operation in Montana. I would recommend checking out their Facebook page by clicking HERE, after you're done buying mugs, of course...
This 10oz tumbler is dishwasher safe and made of durable stainless steel. Double-wall, air-gap construction means it will maintain the temperature of its contents for much longer than a regular tumbler.
Capacity = 10 ounces
Height = 4 5/8 inches
Diameter = 3 3/8 inches