This Royal Hickman vessel stands 4.5" high by 3.25" in diameter. It has a classic form with a very interesting ink stamp on its base identifying the glaze as 'Italian Blue'. The ink stamp mark is repeated twice in small block letters. We've handled a number of Hickman pots over the years with various and sundrie glaze colors, but never one that identified the name of the glaze in any manner. The glaze is a classic 'Petty Crystal' glaze combination that Hickman used while working at the Russell Potteries in Paris, Tennessee. Frank Petty developed the glaze, and Hickman used it on many of his designs over the years. This vase is marked with its shape number in black grease pencil '501', which clearly matches the Hickman form '501', and the Petty Crystal glaze is easily recognized, we just never knew it was 'Italian Blue'. It is in original factory condition, a little out of round at the rim interior as can be seen in the photos, but no apologies. If you like unusual Hickman pots, this one fits the bill!