Handwritten on a white sticker between the holes at the extraction end
Assembly number printed in white at extraction end on component side
Stamped on white sticker at extraction end on solder side
Stamped on solder side between holes in substrate
Copyright number printed at extraction end on component side
overall: 3/8 in x 4 1/4 in x 4 3/4 in
"CLOCK OSCILLATOR" is printed in white at the extraction end of the component side. There are two rounded holes in the board. Between the holes on the solder side there are several inspection stamps of varying types.