Likely made in China. The porcelain is bone colored. This will look familiar to many cone 6 potters. The outside glaze looks very similar to an Albany blue, it achieves this efffect by the addition of about 4% rutile. The Alberta Slip recipe GA6-C recipe does this also. The inside likewise looks like an Albany amber transparent (with extra colorant added to darken it somewhat). The Alberta Slip glaze GA6-B could also be used.
A type of ceramic glaze in which the surface variegates and crystallizes (on cooling) from the presence of rutile mineral in the recipe.