Here is a MTH 30-18431 O Union Pacific 4-8-8-4 Big Boy #4018 w/Coal Tender PS3.0.
This Steam Locomotive Features:
Authentic Paint Scheme
Real Tender Coal Load
Die-Cast Locomotive Trucks
Handpainted Engineer and Fireman Figures
Metal Handrails, Whiste and Bell
Metal Wheels and Axles
Remote Controlled Proto-Coupler
Prototypical Rule 17 Lighting
Constant Voltage LED Headlight
Operating LED Firebox Glow
Operating LED Numberboard Lights
Lighted LED Cab Interior
Operating Tender LED Back-up Light
(2) Powerful Precision Flywheel-Equipped Motors
Synchronized Puffing ProtoSmoke System
Locomotive Speed Control In Scale MPH Increments
Wireless Drawbar
Onboard DCC/DCS Decoder
Proto-Sound 3.0 With The Digital Command System Featuring Freight Yard Proto-Effects
Unit Measures: 29 1/8 x 2 5/8 x 4
Operates On O-31 Curves

This item has been graded per TCA standards C-7: Excellent based on visual appearance. The wheels show average run-time. There are light nicks and scratches on the surface of this item. The overall appearance of this item may be improved with a gentle and thorough cleaning. The instruction manual is not included. The original box is not included. Please check the photos for a detailed look at this item. Overall condition is Excellent.

Condition: Excellent (C-7)
Operational Status: Functional
Original Box: No

Manufacturer: MTH
Model Number: 30-1843-1
Road Name: Union Pacific (UP)

Scale/Era: O Modern
Model Type: Steam Loco

The SKU for this item is 5983021.