1 9 , ▁Class ▁ 1 9 A , ▁Class ▁ 1 9 B , ▁Class ▁ 1 9 C ▁and ▁Class ▁ 1 9 D . ▁ ▁Class ▁ 2 0 . ▁ ▁Class ▁ 2 4 . ▁ ▁Class ▁MC 1 , ▁Class ▁M H ▁and ▁Class ▁M J . ▁ ▁Class ▁S 2 . ▁ ▁The ▁second ▁letter ▁indicates ▁the ▁tender ' s ▁water ▁capacity . ▁The ▁"_ P " ▁tend ers ▁had ▁a ▁capacity ▁of ▁. ▁ ▁A ▁number , ▁when ▁added ▁after ▁the ▁letter ▁code , ▁indicates ▁differences ▁between ▁similar ▁tender ▁types , ▁such ▁as ▁function , ▁wheel base ▁or ▁coal ▁b unker ▁capacity . ▁ ▁Mod ifications ▁and ▁re building ▁ ▁Mod ifications ▁Most ▁of ▁these ▁tend ers ▁were ▁modified ▁by ▁short ening ▁and ▁raising ▁the ▁sides ▁of ▁the ▁coal ▁b unker , ▁in ▁effect ▁making ▁the ▁coal ▁at ▁the ▁rear ▁of ▁the ▁b unker ▁more ▁easily ▁accessible ▁to ▁the ▁st oker ▁and ▁apparently ▁without ▁affect ing ▁the ▁tender ' s ▁coal ▁capacity . ▁ ▁Rec lass ification ▁to ▁Type ▁XP 1 ▁At ▁some ▁stage , ▁probably ▁after ▁its ▁engine ▁was ▁with dra wn ▁from ▁service ▁c . ▁ 1 9 3 7 , ▁the ▁intermediate ▁draw ▁and ▁buff ing ▁g ear ▁of ▁Type ▁MP 1 ▁tender ▁no . ▁ 1 6 3 4 , ▁off ▁a ▁Class ▁MC 1 ▁Mal let ▁locomot ive , ▁was ▁alter ed ▁to ▁suit ▁Class ▁ 1 0 ▁ ▁Pacific ▁no . ▁ 7 4 6 . ▁This ▁modification ▁converted ▁no