Big Bertha is an Estes original

The Trainz SKU for this item is P12312984

This caboose features plastic trucks

This is American Model Builders 141 New Freedom PA depot

These units came to the IC in the early 1990s secondhand from the Burlington Northern

MTH 70-73031 G Scale M&Ms Unibody Tank Car ProductID_12083771 Big Bertha is an EstesHere is a MTH 70 73031 M&MS Unibody Tank Car. Features include Intricately Detailed Polycarbonate Body, Metal Wheels and Axles, Decorative Brake Wheels, Separate Metal Handrails, Detailed, Sprung 4 Wheel Trucks, Choice of Operating Knuckle or Hook & Loop Couplers, Colorful, Attractive Indoor Outdoor Paint, 1: 32 Scale Dimensions, Unit Measures: 18" x 3 8" x 4" x 6", and Operates On R1 Curves. Condition: Factory New (C 9) Operational Status: Functional