This is a B137 module with a green board and a blue plastic extraction handle, attached by two rivets. Between the rivets the words "FLIP CHIP" are visible. The component side is marked by four inspection stamps. "Inverter B 105 D" is printed on the solder side.
Digital Equipment Corporation (DEC)
Stamped in white on face of extraction handle.
Stamped on reverse of extraction handle between manufacturer and place made
Printed on solder side of module parallel to lefthand edge