Geometric platter by Warren MacKenzie. White Shino with lighter iron.
Heralds back to the earlier days of Warren and his Bauhaus training. See some images (obviously not part of the package) from Tate Museum in the UK. The lithographs are from the 50's. True midcentury design.
Dimensions (Diameter X W in inches):17" X 3.5"
Maker Mark: No
Stillwater Mark: No