Bowser Manufacturing Co.
H-21a 4-Bay Hopper

Penn Central
Walthers Part # 6-37407, p. 72 Walthers 2012 N&Z Scale Reference
N scale, $13.95, not currently in stock at Walthers, Expected: In Transit

 
Based on a common PRR prototype, these cars were used by PRR successors and a few similar cars operated on other railroads. Cars come equipped with correct Crown trucks and standard N (Rapido-type) couplers.