Unglazed handbuilt stoneware by Karl Martz, 1957.
16.5 inches tall (42 cm), cone 5.
Permanent collection of the Smithsonian Museum of American History, Washington DC.
A photograph of this work is in Ceramics by Glenn C. Nelson (Holt, Rinehart & Winston, 1960, p. 14).

Shown in: The XXth International Ceramics Exhibition, Syracuse Museum. New York and Metropolitan Museum, New York, 1958. A one-artist show at the Univerisity of Nebraska, 1961. The first San Jose National Invitational Ceramic Exhibition, San Jose, California, 1963.

Above: First two photographs thought to be by Karl, third by Eric Martz.
Below: Photographs from the Smithsonian (brightness & color adjusted).