Handwritten on paper label located on the back right bottom corner.
Located on an engraved plate on the front and back of module.
overall: 8 1/2 in x 26 in x 11 1/2 in
The record contains a module with 7 vacuum tubes and one unpopulated socket. The module has a multi-pin connectors, 2 coax connectors, and 7 capacitors. There are 10 round variable resistors affixed to the top and bottom edges of the back of the module.