The I.Q. van Regteren Altena Collection of Old Master Drawings, sold at auction at Christie's with the advice of Art Consult:
1. Dutch and Flemish Drawings from the Renaissance to the Golden Age, London, 10 July 2014
2. Dutch and Flemish Drawings from 1500 to 1900, Amsterdam, 10 December 2014
4. French and Italian Drawings from 1500 to 1900, Paris, 25 March 2015
5. Dutch and Flemish Drawings from 1500 to 1900, Amsterdam, 13 May 2015
The total sales result of the 4 auctions is over € 22 million.
Illustration: Sir Peter Paul Rubens (1577-1640), Samson and Delilah, study in pen and brown ink (realised € 4 million).
