Trumptrain: Can't find o scale model of exact on web research. But "wheelsotime.com" indicates pictured car is 70ft, arch roof car. The doors appear to be proportionally close the baggage doors on lionel or k-line 18 inch cars. However, the roofs and door locations of lionel and k-line versions differ from the c&o. Cheers
Edit: The faded shadows of coach car windows artfully record a part the car's history.