Just got these Tyco/Mantua 1860s Passenger cars. They were in the Tyco 1963 catalog for $3.98 each. I paid $3.00 each.
The horn hook couplers are riveted on, so I just swapped out the truck on the combine to be able to run it on my knuckle equipped locos. I'll paint the other trucks to match soon. And since the road name is fictitious, I may paint them up to match that UP 4-4-OH.
Not a bad buy.