This is Atlas 50001668 N PS-2750 Triple Hopper, DT&I #1711. PS-2750 triple hopper, Detroit Toledo and Ironton #1711. In the 1950s Pullman-Standard began offering new standard designs for their coal hoppers. One of these was the 70-ton three bay coal hopper with a rated volume of 2,750 cubic feet. The carbody had sixteen side posts and was available with and without heap shields. Later an 80-ton version was offered using the same length frame but having a taller body with a rated volume of 2,960 cubic feet. The cars were built from 1954-1960 (2750 cf) and 1964-1971 (2960 cf). Its key features are: Fifteen panels Sixteen side posts Die-cast hopper and center sill construction Late 20th century prototype (New cars were built from 1954-1971) Optional heap shields Friction- or roller-bearing trucks Pullman-Standard design Over 16,000 cars built Manufacturer: Atlas. Model Number: 50001668. Scale/Era: N Scale. Model Type: Freight Cars.