John Collier - portrait of Charles Darwin (study)

inscribed and signed below: Charles Robert Darwin 1809-1882/ Study by John Collier.
12 x 9"
Watercolour
This is a study for the 1881 portrait painted for the Linnaean Society (replica dated 1883, National Portrait Gallery).
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1850 - 1934.

http://www.artmagick.com/pictures/artist.aspx?artist=hon-john-collier