Mounted on the board is an extraction panel, made of the same material as the board. "SHDR Slot 20" is handwritten on a white sticker on the front of the board. "Slot 20" is also handwritten on the solder side of the board.
Date
1972 ca.
Manufacturer
Evans & Sutherland Computer Corporation
Identifying Numbers
Other number
133106-103
Etched in solder in the top left corner on the component side.