The object is a module with nine tube socket positions. Only three positions are populated. Positions two and three are for medium sized tubes, and position nine is small. The sockets are framed by a metal handle. Below the sockets is a chassis holding 13 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
3087061 000197
Stamped on top center of frame in black ink
Other number
6108
Written on white circular label on left inside of handle
Other number
D 3087061 000197
Printed on first line of paper label on front of handle
Other number
XA B02 P J
Printed on first line of paper label on front of handle