This is an example of the traditional scuttle. GFT has one in Oxford blue, and you can often find different vintage examples on eBay. Once in a while you can even find one in sterling silver - for a price. It seems to me that the heavy clay, double-walled scuttle/mixing bowl is a recent innovation. What you gain in heat-retaining practicality comes at the expense of size and elegance. It's all a question of personal preference and trade-offs.
Just in case fellas,
This is not a scuttle you build lather in. The soap sits on the top, while the warm water keeps the soap warm. You stick your brush in the side to keep it warm as well. The other scuttles posted on here actually allowed you to build lather in the bowl.