* Add 1 Part 4592c02 Black Lever Small Base with Black Lever (Extra)
* Add 1 Part 2447 Black Minifig, Visor Standard (Extra)
* Add 1 Part 2447 Trans-Red Minifig, Visor Standard (Extra)
Comments from Submitter:
Source: old set, never taken apart. The box still had 4 sprues for part 4073 along these extras, so I suspect there might also have been 2 extra tr-red round plates (not certain, though!)