Here is a Lionel 6-19018 O Lionel Lines Sager Place Madison Observation Car #9018 from 1992.
It features 6-wheel trucks with operating couplers and an illuminated interior, and measures 14 inches long.

This item has been graded per TCA standards C-7: Excellent based on visual appearance. The wheels show average run-time. The overall appearance of this item may be improved with a gentle and thorough cleaning. There are light nicks and scratches on the surface of this item. The original box is included. Overall condition is Excellent.

Condition: Excellent (C-7)
Operational Status: Functional
Original Box: Yes (P-6)

Manufacturer: Lionel
Model Number: 6-19018
Years Manufactured: 1991 – 1991
Road Name: Lionel Lines

Scale/Era: O Modern
Model Type: Passenger Cars

The SKU for this item is 5939147.

Product Id: 11395652