Physical Dimensions: overall (diameter): 8.66 cm (3 7/16 in.)
Provenance: Professor Dr. Klaus Lankheit [1913-1992], Karlsruhe; (his estate sale, Morton & Eden Ltd., 20-21 May 2003, 2nd day, no. 774). (sale, Morton & Eden Ltd., 9 June 2009, no. 364); Andrew M. Brown, Anchorage; gift 2009 to NGA.