Stamped into the substrate in white on the component side
Printed on the circuit side in silver
Stamped in black on the extraction end bracket.
Stamped onto the brown substrate at the insertion end
overall: 1/2 in x 3 1/2 in x 8 1/4 in
This module has a brown board with various metal components. At the extraction end there are four lights, which are held in place by a black metal bracket. On the bracket there are two white stickers. "403/1" is printed on the bottom sticker. "TELEFUKEN" is printed on the solder side in silver.