This is a B104 module with a green substrate and a blue plastic extraction handle, attached by two rivets. The obverse side has several components, which begin 3/4 of the way down the substrate. The module is marked by three inspection stamps, one on each side. "neLco" is lightly printed in red throughout the module. "INVERTER B 104C" is printed in silver on the reverse side.
Digital Equipment Corporation (DEC)
Printed in White on handle's face
Printed in silver on reverse side of module parallel to top edge
Printed in white on top of black rectangular component on obverse side of module