The object is a medium-size metal panel bearing 9 BNC connectors and one multi-pin male connector. There are sockets for 8 vacuum tubes of which two are populated. There is one pair of indicator lights.
Date
1951
Manufacturer
Massachusetts Institute of Technology (MIT)
Identifying Numbers
Model number
103
Printed in white on the lefthand side of the board
Model number
301
Alternate model number printed in white on the lefthand side of the board.
Other number
-box1-#7
Handwritten in red on a paper card, which is taped to the front of the board.
Serial number
9
Printed in white on the lefthand side of the board
