One (1) B311D module 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 "TAPPED DELAY LINE B311 D" along the left edge and "2-74P" along the right edge.. There are three black inspection stamps; one circle, one square, and one triangle. A repeating "don" pattern is printed in red on the board and a thin strip of particle board, painted white, has been glued over the connector fingers on the solder side.