Here is a really nice looking car owned by Ed Havens. He wonders who made it.

First, so far as I can tell no maker produced a composite hopper in OO, so this model must be either scratchbuilt or kitbashed. 

I believe based on what I see in the photos that it is Picard. Their hopper kits were very basic. It looks like a good builder either replaced the sides with scribed stock or cut the boards into the sides that came with the car by hand. The end sill parts could easily be Selley, and of course Scale-Craft ladders.

The result is again a stunning, vintage car of a design hardly seen built up in American OO.