kee , ▁and ▁remains ▁there ▁to ▁this ▁day , ▁now ▁producing ▁other ▁pl astic ▁prom ot ional ▁products , ▁but ▁not ▁vehicles ▁( T imm ▁ 2 0 1 0 ▁Product ▁M ini ature ▁page ). ▁ ▁A ▁first ▁in ▁pl astic ▁In ▁the ▁late ▁ 1 9 4 0 s ▁and ▁early ▁ 1 9 5 0 s , ▁PM C s ▁main ▁riv als ▁in ▁prom ot ional ▁vehicle ▁models ▁were ▁B anth rico , ▁National ▁Product s , ▁A MT , ▁S MP , ▁and ▁Jo - H an . ▁PM C ' s ▁vehicle ▁products ▁were ▁called ▁" T ru ▁M ini atures ". ▁ ▁PM C ▁introduced ▁its ▁first ▁models ▁about ▁ 1 9 4 7 , ▁around ▁the ▁same ▁time ▁as ▁Ide al ▁Mod els , ▁which ▁later ▁changed ▁its ▁name ▁to ▁Jo - H an . ▁Though ▁B anth rico ▁and ▁the ▁similar ▁National ▁Product s ▁models ▁were ▁metal , ▁PM C , ▁along ▁with ▁Jo - H an , ▁were ▁the ▁first ▁prom ot ional ▁companies ▁to ▁introduce ▁pl astic ▁models ▁to ▁deal ers hips , ▁both ▁be ating ▁A MT ▁by ▁a ▁year ▁or ▁so . ▁Mod els ▁were ▁first ▁m old ed ▁in ▁cell ul ose ▁ac et ate , ▁which ▁t ended ▁to ▁war p ▁over ▁time . ▁Among ▁autom ot ive ▁prom ot ional ▁model ▁mak ers , ▁PM C ▁and ▁S MP ▁were ▁the ▁only ▁prom ot ional ▁companies ▁that ▁produced ▁nearly ▁all ▁of ▁their ▁products ▁through ▁the ▁lives ▁of