Black Glaze Stemless Cup: Stamped. Black Glaze Stemless Cup: Ribbed and Stamped. Black Glaze One-Handler: Stamped ... ΝΝ-15 2957, 2958 P 16933 P 16934 P 16935 P 16936 Lot ΝΝ 4 Lot ΝΝ 5 Lot ΝΝ 6 Lot ΝΝ 1 Lot ΝΝ 2 P 16933 P 16934 P 16935 P 16936 ... 17-24 May 1940