Keith,
It looks like Lindsay is referring to a 1958 truck.
Rear fender welt was not used by the factory on pickups between 47-55 (Advance-Design series) but welt was used on panel-body rear fenders during those years.
Others will have to post about pre-'47 and post-'55-1st series trucks. Jim Carter's catalog states that rear fender welt on pickups was not used from the factory from 1934-1972.
It seems odd that the factory did not use rear fender welt.
Tim
