Christie's charge a buyer's premium of 20.825% of the hammer price for lots with values up to NLG 200,000. If the hammer price exceeds the NLG 200,000 then the premium is calculated at 20.825% of the first NLG 200,000 plus 11.9% of any amount in excess of NLG 200,000.
Please note that this lot is executed in 1973.
Parcours Jacques Doucet, Paris 1998, Ed. Galilée, no. 1149, p. 19 on additif, vol. III