Things to remember.......
Early models of the cab 11 did not have any door seals on the arch bars....that was primarily a cab 12 luxury item.
As rubber became scarce steering wheel went to wood, mud flaps went from rubber to canvass and cab's various seals went to flat canvass oil/tar impregnated and thicker canvass welting. There is evidence that body spacers we made of recycled car tire sidewalls. Spare tires also became the norm. Old stock would still have been in various overseas stores.
Changes started to happen approx. same time as cab 13 came on the scene.... no specific dates as changes were made as supplies on the assembly lines dried up.
cheers
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Bob Carriere....B.T.B
C15a Cab 11
Hammond, Ontario
Canada
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