Todd,
as usual you present great images.
top photo and middle photos aren't the same "era";
Top photo is carrying White flags vs middle photo appears to be carrying Green flags; the rear sand delivery pipe(behind the middle driver) isn't at the same angle.
Middle photo has a cleaner cabside numeral than the top.
Notice the Folding Seat of an Engineer leant against the base of the Crossbucks , along with a Toolbox on the ground.

Bottom photo so reminds me of Joe Crea's modelling efforts.
UpSideDownC
in New Zealand