I think that's one of the Erie 50 ton covered hoppers from the early 1930s, IIRC a Greenville 1321 cu. ft. design. I know Owens Corning (the red "Duraglas" lettering) also had some, and a Royce Chemicals company from NJ. I think RI got some second hand for locomotive sand service as well.
F&C makes a HO resin kit, but the brass model was imported by PSC.