The object is a module with 9 sockets, 8 are populated with vacuum tubes of varying size and one is populated with a component, possibly a vacuum tube replacement. The sockets are framed by a metal handle. Attached to the handle is a chassis containing 11 printed circuit boards, all of which are wired to 3 male connectors at the bottom of the chassis. There are 3 IBM inspection stamps on the chassis.
Date
1958
Manufacturer
International Business Machines (IBM)
Identifying Numbers
Other number
002481
The number is stamped on the chassis.
Other number
3087607
The number is stamped on the chassis.
Other number
6543
The number is handwritten on a round paper sticker located on the inside of the handle.
Other number
6544
The number is handwritten on a round paper sticker located on the inside of the handle.
Other number
6545
The number is handwritten on a round paper sticker located on the inside of the handle.
Other number
B02 B H
The number is printed on a paper label located on the handle.
Other number
D 3087607 002481
The number is printed on a paper label located on the handle.