Very nice work and a really good-looking model. I like the way you've painted and weathered it, too. :thumb::thumb:
As for the prototype, it looks like it may have been a grain elevator originally, then later converted to a coal dealer with the addition of the silos.
Although, the silos could just be for additional grain storage. I think that you can letter this one to best suit your own purposes and plans for where you're going to use it.
I built the structure below from a photograph of a prototype that was originally a coal dealer, but had been converted to a grain storage facility. The original housing for the trackside coal elevator was moved to the "road" side of the structure, and a covered dumpshed added for grain trucks and wagons. The old dump pit was covered over with wood and metal siding. It's in this spot temporarily, as its hometown has yet to be built. The model is styrene.
Wayne