Acquisition method
gift
Acquisition date
7/1964
Source
Dr E. S. G. Robinson; Hess (Lucerne) 108, 16/4/64; Schlessinger 13, 490
Acquisition credit
Presented by Dr E. S. G. Robinson, 1964.
Acquisition note
Purchased by Dr E. S. G. Robinson for 2800 Swiss Francs