The object is a metal rack standing on built-in legs. The rack contains 5 vacuum tubes (all tubes are still attached). Besides the tubes, the rack has 16 BNC connectors and another connector (probably a power connector).
Date
1951
Identifying Numbers
Other number
01978
Stamped on a label on the top of the object
Other number
A15-1
Printed on a label on the bottom of the object
Other number
LX 033717
Printed on a red sticker attached to the bottom of the object
