Analog preamplifier circuit 1783 A system building block
Digital Equipment Corporation (DEC)
||On an orange sticker on the front of the aluminum frame
||Stamped into the side of the aluminum frame
||Etched in solder at the insertion end of the board
||Stamped into the side of the aluminum frame.
overall: 1/2 in x 4 1/2 in x 7 in
The board is surrounded by an aluminum frame and a blue plastic connector. "Analog preamplifier circuit 1783 A" is printed at the insertion end.