The object is a B165 module with a light green board and a blue plastic extraction handle, attached by two rivets. The solder side has several components, and is marked with three inspection stamps, two round and one square. The square stamp reads "Tested 14 A.MT.2" and the round stamp furtherest to the right reads "Final Inspection 341". There are red "W"s printed throughout. "DIODE INVERTER B165" is printed on the solder side.
Digital Equipment Corporation (DEC)
Stamped in white on face of extraction handle
Printed in solder on reverse of board parallel to left edge