The object consists of a green board surrounded by a silver frame and a blue plastic connector. On one side there are several rows of components. The top row contains nine resistors. Then there are two rows of black transistors, which total nine. Below the transistors there are nine larger resistors. On the solder side there is a lettered grid A-Z.
Date
1963 ca.
Manufacturer
Digital Equipment Corporation (DEC)
Place Manufactured
Maynard, Mass.
Identifying Numbers
Model number
1669 C
Printed in solder near insertion end
Other number
1669
Stamped into the face of the face of the aluminum frame