"ET AMPLIFIE" is printed in white at the extraction end of this printed circuit card. At each corner of the component side there is a round hole. Between the holes is an inspection stamp featuring a triangle inside a circle. Three fourths of the component side is covered by a brass plate.
Xerox Data Systems, Inc. (XDS)
Printed in white at the extraction end of the component side
Stamped at the extraction end of solder side
Printed in what at the extraction end of the component side (assembly number)
Printed in gold near rivet hole at extraction end on component side
Printed in silver beneath the dark green color layer on the solder side