Etched in solder at the insertion end of the board
Stamped into the face of the aluminum frame
Stamped into the side of the aluminum frame
overall: 1/4 in x 4 1/2 in x 7 in
The board is surrounded by an aluminum frame and a blue plastic connector. On one side there are neatly arranged components and 23 identical inspection stamps. On the back is a printed circuit and many more inspection stamps.