Electro-Motive Division F7A #564 (originally D&RGW #564D) of the Chicago Madison & Northern circa 1984.
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