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.
Mr. J. Koenraad, Amstelveen.
Voorschoten, Cultureel Centrum, H.H. Kamerlingh Onnes 1893-1973, 13 April-7 May 1973, cat. no. 92.
Venlo, Museum van Bommel van Dam, H.H. Kamerlingh Onnes 1893-1973, 11 May-4 June 1973, cat. no. 92.