The object is a module with seven sockets one contains a vacuum tube and six are plugged. All the tubes are framed by a metal handle. In the chassis there are two power resistors and 15 phenolic circuit boards. The boards are wired to male connectors at the bottom of the chassis. Also printed on the chassis are two inspection stamps reading "K IBM" followed by a number.
Date
1958 ca.
Manufacturer
International Business Machines (IBM)
Identifying Numbers
000047
Stamped on the chassis
3087060
Stamped on the chassis
6107
Printed on a circular paper sticker on the inside of the handle