Two (2) B312 B modules with green board and a blue plastic extraction handle attached by two rivets. The handle reads "DIGITAL EQUIPMENT CORPORATION MAYNARD, MASSACHUSETTS" in raised letters on the solder-side. The board on the solder-side reads "11-71P VARIABLE DELAY LINE B312 B" along the left edge. There are three black inspection stamps, two circles and one triangle. A repeating "W" pattern is printed in red on the board. A thin strip of particle board, painted white, has been glued over the connector fingers on the solder side.