The number is printed on a paper label attached to the handle.
The number is stamped on the chassis.
The number is handwritten in pen on the side of the chassis.
The number, and engineering change number, is stamped on the side of the chassis.
overall: 2 5/8 in x 18 1/2 in x 16 1/2 in
The object is a module with nine sockets, seven are populated with vacuum tubes of varying size, and 2 have plugs. The sockets are framed by a metal handle. Attached to the handle is a chassis containing 10 printed circuit boards and 1 power resistor, all of which are wired to 3 male connectors at the bottom of the chassis. There are two IBM inspection stamps on the chassis.