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.
Galerie De Rijk, The Hague, inv.no. 421.
S. den Heijer and M. van der Knaap, Aarde in verf. Jaap Wagemaker, schilder van het elementaire 1906-1972, Zwolle 1995, p. 188 (ill.), no. S69-015.
Amsterdam, Galerie Magdalene Sothmann, 24 November-15 December 1969.
Groningen, Galerie Wijngaard, 10 January-31 January 1970.
Venlo, Cultureel Centrum, 15 February-15 March 1970.
Eindhoven, Galerie Willy Schoots, 23 March-30 April 1970.