The largest, 8.5 cm (3 3/8 in.) long

Provenance:
From left
The First: A.W. Bahr collection, Weybridge, 1963
The Second: J.T. Tai & Co., New York, 1963
The Third and Fourth: J.T. Tai & Co., New York, 1963
All of the above from the Arthur M. Sackler collection
Christie's South Kensington, 15 May 2009, lot 10
An important Hong Kong private collection
Literature:
The First: Columbia University, New York, February 1965

Price estimate:
HKD: 60,000-80,000
USD: 7,700-10,300