This is a Rapido Trains 023046 HO AT&SF PA-1 + PB-1 Diesel Locomotive DC/Silent #51A, #51C. Manufacturer: Rapido Trains. Model Number: 023046. Road Name: Atchison Topeka Santa Fe (ATSF). MSRP: 482.95. Scale/Era: HO Scale. Model Type: Diesel Loco. Availability: Ships in 1 to 2 Business Days. Trainz Product Id: 12639726.