Here is a Lionel 6-18503 O Gauge Southern Pacific Diesel Switcher #8503.

Features include:

Powerful Pullmor motor

Die-cast metal chassis

Magnetraction

Die-cast trucks

Metal wheels & axles

Operating die-cast knuckle couplers

Operating headlights at both ends

Illuminated running lights

Transformer controlled forward-neutral-reverse operation

Ringing bell sound as engine moves along the track

Wire handrails

Minimum Curve: O-27

Length: 12″

This item has been graded per TCA standards C-8: Like New based on visual appearance. The wheels and rolling pickups show signs of light use. The instruction manual is included. The original box is included. Overall condition is Like New.

Condition: Like New (C-8)
Operational Status: Functional
Original Box: Yes (P-6)

Manufacturer: Lionel
Model Number: 6-18503
Road Name: Southern Pacific (SP)

Scale/Era: O Modern
Model Type: Diesel Loco

The SKU for this item is 5949858.

Product Id: 11563810