The prototype of the car was built by the Ortner Freight Car Company for the Southern Railway from 5-9/1980 (Series 139725-139874) This HO 1:87 Ortner GS51 Woodchip Gondola STL files comes with the body, A and B platforms, brake wheel and coupler box covers. The only thing you need to complete this model is some 100-Ton rolling bearing trucks with 36' metal wheels and metal couplers of your choice. Also you need 2-56 x 1/4 phillips pan head screws for the trucks and 2-56 x 1/8 phillips pan head screws coupler boxes.