Lionel 6-9821 SP Standard O gondola
This is a very basic 42 foot standard O Lionel straight side gondola. BLT 1-73.
The model was modified to adjust the truck pivot to the truck centers to 8 inches (32 scale feet). The original mounting has the trucks offset. The car underframe was attached with small machine screws rather than using "tabs" improving the appearance. Also the plastic "load" was modified to set deeper in the car which improves somewhat the appearance. Since the car will be used in MOW service the load will be painted to resemble ballast.