The object is a module with seven tube socket positions. Only two positions are populated. Position one has a medium sized tube, and position two is small. The sockets are framed by a metal handle. Below the sockets is a chassis holding 16 PC boards with passive components. The PC boards are connected to three male parallelogram shaped connectors at the rear. There is one inspection stamp on the top center of the frame
Date
ca. 1958
Manufacturer
International Business Machines (IBM)
Identifying Numbers
Other number
3087059 000185
Stamped on top center of frame in black ink
Other number
6105 6105
Written on white circular label on left inside of handle
Other number
D 3087059 000186
Printed on first line of paper label on front of handle
Other number
XB B02 N T
Printed on first line of paper label on front of handle