Here is an Atlas 6437-4 O Gauge Baltimore & Ohio 50-Ton War Emergency Hopper #733168 (3Rail)

This kit is perfect for layouts and modules depicting the 1920s to the present

Model Number: 30-67716

The Trainz SKU for this item is P12381109

a detailed underframe with brake system

Lionel 6-26766 O Gauge Priority Mail Operating Boxcar ProductID_12154108 Here is an Atlas 6437-4Here is a Lionel 6 26766 O Gauge Priority Mail Operating Boxcar. When activated by a remote control track section (sold seperately), the door opens and the figure pops out and flicks out a package. It also features diecast trucks and operating couplers. Condition: Factory New (C 9) Operational Status: Functional Original Box: Yes (P 9) Manufacturer: Lionel Model Number: 6 26766 Years Manufactured: 2001 2001 Road Name: United States Postal Service