[dwcsr]

In 59 according to my Salesman's Data book the cabs were either custom or deluxe. deluxe was the base model

Custom cabs and custom panels included a right side door key lock, bright metal windshield and side window reveals and vent pane windows trim, 30 series also included chrome grille, hub caps and front bumper. Custom feleetside had the bed trim.

Custom options also included cigarette lighter, chrome dash knobs, dual sun shades, Arm rests,, fabric door inserts and seat panels

Full view rear window could be added to either custom or deluxe.

I don't see where you could get side trim on a deluxe without the custom package