拍品专文
Certificate: Albert Hamma, Munich, September 9, 1933 (copy); J. Stern, New York, September 24, 1942
Dendrochronology: John Topham, Redhill, UK, March 3, 2012. The tree-ring analysis report dates the youngest growth rings on the bass side of the top to the year 1752 and the treble side to 1766.
Dendrochronology: John Topham, Redhill, UK, March 3, 2012. The tree-ring analysis report dates the youngest growth rings on the bass side of the top to the year 1752 and the treble side to 1766.