Object is a large metal panel bearing 16 BNC connectors and one multi-pin male connector. There are sockets for 5 vacuum tubes of which 4 are populated. On the wiring side is a red gummed label with the text "PAT. NO. 3.489.433".
Date
1951
Manufacturer
Massachusetts Institute of Technology (MIT)
Identifying Numbers
Other number
A12-1
Written on white gummed label wiring side
Other number
LX 033717 146
Printed on red gummed label wiring side
Serial number
12
Printed upper left corner and on the wiring side board