Check out this HO scale Rapido 127021-2 Alcan UNPX cylindrical covered hopper. It comes in striking yellow and black colors and is marked with #121414 NSC 3800. Note that the picture might show a different road number.

Using this HO scale cylindrical covered hopper is easy. You can simply place it on your model train track. When handling it, be gentle to avoid any damage. To keep it in good condition, clean it regularly with a soft, dry cloth. Avoid using harsh chemicals as they might damage the paint. Store it in a cool, dry place when not in use to prevent any warping or discoloration.