Here is a MTH 30-20522-1 O Halloween Diesel & Caboose Set [2] #131.

Set Features:
ES44 Diesel Locomotive
Extended Vision Caboose

Locomotive Features:
Intricately Detailed Durable ABS Body
Die-Cast Truck Sides, Pilots and Fuel Tank
Metal Chassis
Metal Handrails and Horn
(2) Handpainted Engineer Cab Figures
Authentic Paint Scheme
Metal Wheels, Axles and Gears
(2) Remote Controlled Proto-Couplers
Prototypical Rule 17 Lighting
Directionally Controlled Constant voltage LED Headlights
Lighted LED Cab Interior Light
Illuminated LED Number Boards
Operating LED Ditch Lights
Operating LED Charging Lights
(2) Precision Flywheel-Equipped Motors
Operating ProtoSmoke Diesel Exhaust
Onboard DCC Receiver
Locomotive Speed Control In Scale MPH Increments
Near Scale Sizing
Locomotive Measures: 17″ x 2 1/2″ x 3 3/4″
Operates On O-31 Curves

Caboose Features:
Intricately Detailed Durable ABS Body
Stamped Metal Floors
Metal Wheels and Axles
Die-Cast 4-Wheel Trucks
Fast-Angle Wheel Sets
Needle-Point Axles
Operating Metal Latch Couplers
Caboose Interiors With Overhead Lighting
Decorative Brake Wheels
Separate Metal Handrails
Near-Scale Proportions
Locomotive Measures: 17″ x 2 10 1/4″ x 2 1/2″ x 4 1/4″
Operates On O-27 Curves

This item has been graded per TCA standards C-9: Factory New based on visual appearance. The wheels show signs of wear. The instruction manual is included. The original box is included. Please check the photos for a detailed look at this item. Overall condition is Factory New.

Condition: Factory New (C-9)
Operational Status: Functional
Original Box: Yes (P-7)

Manufacturer: MTH
Model Number: 30-20522-1
Road Name: Halloween

Scale/Era: O Modern
Model Type: Diesel Loco

The SKU for this item is 5927959.

Product Id: 12771139