yes John, that number would mean: "255" = 1955 2nd series, "O" [letter]= Oakland plant, "018901" = the unit number [starting from 001001], and on your door tag it should have a leading "H", indicating a short 1/2T [pickup or panel or other]
"When we tug a single thing in nature, we find it attached to the rest of the world" ~ John Muir "When we tug a single thing on an old truck, we find it falls off" ~ me Some TF series details & TF heater pics
