Athearn Genesis - HO Scale - F7A-F7B - Southern Pacific #s 6203/8106 with DCC & Sound (SKU 141-16271)
Researched from prototype to match specific units
Dynamically balanced skew wound motor and flywheels
Body matches exact body and phase for prototype
Separately applied photo-etched metal and injection molded detail parts
Genesis improved drive line
All windows glazed
Directional constant lighting
Cab interior
A Union Pacific licensed product