Patent number is located on the bottom of the module next to the connecting pins
This number is located on both circuit boards
Drawing number is located on the side of the module on the blue plaque
overall: 6 3/8 in x 2 in x 1 in
The record contains 24 modules with the same drawing number and 63PW582 number. The letters "HSFF" are located on both circuit boards underneath or next to the 63PW582 number. They have blue metal sides, a clear handle with one black band and one dark red band. There are 18 connector pins at the bottom of the object. There are two circuit boards on each side comprised of various components and wires. The serial numbers are located on the side of the module on the blue plaque and on the handle. The serial numbers differ for each module. Either the manufacturer (of the bottom plastic piece) "Continental" or "Winchester El. Inc." is located on the bottom where the connector pins are. 2 of the modules have a piece of tape wrapped around the handle, one is blank and the other has "E3T 17" written in pencil. 6 of the modules have a piece of masking tape on their side with words written in blue ink.