The object is a metal panel bearing sockets for 12 octal tubes (three are populated and one for "V-2 74K7" is bagged separately) and a number of coaxial connectors. There is an printed label in upper left, and on rear circuit board, reads 303 B REGISTER DIGITS 0-15 SERIAL # 9". Partly obscured on both labels is "403 in out register".
Date
1951
Manufacturer
Massachusetts Institute of Technology (MIT)
Identifying Numbers
Model number
303
Printed in the top left corner on the front.
Other number
0-15
"Digits" printed in the top left corner on the front.
Other number
403
Printed in red in the top left corner near the words "in out resiter".