The object is a module with nine tube socket positions, six of which are populated. All populated positions have medium sized tubes. The sockets are framed by a metal handle. Below the sockets is a chassis holding 11 PC boards with passive components. The PC boards are connected to three male parallelogram shaped connectors at the rear. There are two inspection stamps on the top center of the frame.
Date
ca. 1958
Manufacturer
International Business Machines (IBM)
Identifying Numbers
Other number
3087034 000378
Stamped on top center of frame in black ink
Other number
6058 6059 6060
Written on white circular label on left inside of handle
Other number
D 3087034 000378
Printed on first line of paper label on front of handle
Other number
XB B02 C U
Printed on first line of paper label on front of handle
