Found this while scrounging this past weekend. It's marked "Digital" and "LG Controller" and "5016948 01 F1". Besides plenty of SSI ICs, it contains an 8255, 8 27256 EPROMs and an Intel 80186 and a 50 pin ribbon cable header. It measures 11 1/2" deep x 10" wide and looks similar to a Multibus card with one wide and one narrow card edge connector. (the wide connector is only used for ground). I searched the on-line DEC Field Guide and Google but didn't find anything that sounded like it. Joe