Physical Dimensions: overall (diameter): 3.56 cm (1 3/8 in.)
gross weight: 23.78 gr (0.052 lb.)
axis: 6:00
Provenance: Dr. Nussbaum, Zurich; purchased 1934 by J.W. Frederiks [1889-1962], The Hague; (sale, Sotheby's, London, 23-24 May 1988, 1st day, no. 14); purchased by (Cyril Humphris, London) for NGA.