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 €20,000, plus 23.8% of the Hammer Price between €20,001 and €800.000, plus 14.28% of any amount in excess of €800.000. Buyer’s premium is calculated on the basis of each lot individually.
Anonymous sale; Christie's, London, 28 October 1977, lot 138.
Anonymous sale; Lempertz, Cologne, 23 November 1978, lot 22.
Anonymous sale; Waterman, Zurich, 19 May 1979, lot 14.
Anonymous sale; Koller, Zurich, 18 June 1985, lot 5006.