Christie’s charges a premium to the buyer on the Hammer Price of each lot sold at the following rates: 29.75% of the Hammer Price of each lot up to and including €5,000, plus 23.8% of the Hammer Price between €5,001 and €400,000, plus 14.28% of any amount in excess of €400,001. Buyer’s premium is calculated on the basis of each lot individually.
Possibly Kirsch, Düsseldorf.
Dr. Schindler (according to an old label on reverse).
Possibly H. Kisky, in U. Thieme and F. Becker, Allgemeines Lexikon der bildenden Künstler, Leipzig, 1947, XXXVI, p. 167.