Bowser Manufacturing Co.
3-Bay Cylindrical Covered Hopper

Missouri Pacific (light gray)
Walthers Part # 6-37291, p. 76 Walthers 2010 N&Z Scale Reference
N scale, $12.95, currently in stock at Walthers

 
Cars are gray with appropriate graphics unless noted and come equipped with standard N (Rapido-type) couplers.