I purchased this car on the bay. Was in a lot of 3. I love milk trains. This car got my curiosity and there was another car in the lot that I liked. It has 2 rail wheelsets and Kadee’s. It is based on a Lionel Scale milk car chassis. With the body removed. With this you will get the high speed trucks and a correct chassis. The prototype butter dish car was simply done by removing the wooden sides and building a dished cover over the 2 tanks. They car needs some finishing up. The body itself was a nicely done wood carving. Someone more creative than me. Could probably 3D print one. It’s held on by small screws. The same holes Lionel used to mount their tanks.
If you need decals. Contact me {e mail is in my profile] and I can give you a good source with a reasonable price.