UP Challenger 4-6-6-4 by Overland, HO Scale — BCHIN LOCOMOTIVES,UP Challenger 4-6-6-4 by Overland, HO Scale — BCHIN LOCOMOTIVES,6980_UP-Coal_0080_f2c41043-,Brass Department | Key Imports CS #89 Union Pacific UP 4-6-6,Brass Department | Key Imports CS #89 Union Pacific UP 4-6-6