This is a model of a Baxter charcoal reefer heater in medium size. This model would be used in long range service and could go 96 hours. It had the added "benefit" of giving off carbon monoxide which would fill the car and kill and mice, rats or tarantulas (I got that from a 1910 book describing these heaters).
I have other styles available. These are not test printed yet.
The shapeways automatic checking system thinks these will print in their grey plastic, which is a rough texture but probably has a look of galvanized metal. I'm going to make it available, but no guarantees on that material.
All models arrive unpainted shipped direct from Shapeways. Most have to
be cleaned prior to painting. You can get more information at my website:
Dave's Model Railway Stuff (www.davesmrs.com)