Here is a Lionel 6-12729 O Operating Mail Pickup Set from the early 1990s

The Trainz SKU for this item is P12364093

The Trainz SKU for this item is P11508365

0 and DCS make the contemporary version a real operator favorite

3 smoke stacks

Con-Cor 41325 N Undecorated Budd 72' Corrugated-Side Baggage Car ProductID_12383267 Here is a Lionel 6-12729This is a Con Cor 41325 N Undecorated Budd 72' Corrugated Side Baggage Car. Condition: Factory New (C 9) Operational Status: Functional Original Box: Yes (P 9) Manufacturer: Con Cor Model Number: 41325 Road Name: Undecorated MSRP: $39. 98 Scale Era: N Scale Model Type: Passenger Cars (New) The Trainz SKU for this item is P12153178. Trainz Product Id: 12153178