Walthers Mainline 910-1763 40' AAR Boxcar "Sentinel Scheme" Baltimore & Ohio B&O 466032 - NOS TX/RX PROTO 2000 E7 Diesels

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Walthers Mainline 910-1763 40' AAR Boxcar "Sentinel Scheme" Baltimore & Ohio B&O 466032 - NOS TX/RX PROTO 2000 E7 DieselsWalthers Mainline 910 1763 40' AAR Boxcar "Sentinel Scheme" Baltimore & Ohio B&O 466032 NOS (New Old Stock) The WalthersMainline HO Scale 40' Association of American Railroads (AAR) 1948 Boxcar is based on cars used across the continent from 1948 into the 1980s. Eager to replace equipment worn out by the Depression and WWII traffic, railroads big and small began updating their postwar boxcar fleets with cars based on the AAR standard design introduced