Found printed in black ink on the bottom of the component side.
Found printed on the label on the metal shelf.
overall: 5 7/8 in x 5 1/2 in x 5/8 in
This record contains one HB53-2 sense amplifier. It has a metal shelf attached on the side with one connector with gold pins on the other side. The label on the metal shelf contains product information, including "Santa Monica, Calif." Printed in black on the bottom of the component side is the title and manufacturer.