Geometric platter by Warren MacKenzie. Shino with iron. Heralds back to the earlier days of Warren and his Bauhaus training. I have also included 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):15 X 2.5
Maker Mark: No
Stillwater Mark: No