Vintage Gordon MARTZ Studio Pottery Platter/Plate/Shallow Bowl – Spiral – 12 3/4 Diam. X 1 3/8 tall. Vintage studio pottery shallow bowl / deep plate / platter. By JANE & GORDON MARTZ. Pressed stoneware with glazed front: white slip trailed spiral on a matte slate-gray ground. Maker’s marks: incised signature G. This bowl has a sharp outer edge and on very close inspection you may detect a few scattered pin pricks to this edge. I tried to capture these in the photos. These are not at all conspicuous. Otherwise excellent original condition with no other damage and no wear to speak of. No restorations or touch ups. No other pin pricks/fleabites. No chips, cracks, flakes, dings, scuffs, scratches. No evidence of use other than decoratively. Light discolorations to the back side that I did not attempt to clean. Otherwise clean as found with no other discolorations and no scale, staining, etc.