Newton's Iconic Portrait Commissioned by Newton Himself Two Years After the Publication of his Principia, 1687 "The most impressive of all the Newton portraits" - Gjertsen, The Newton Handbook, 1986 Sir Geoffrey Kneller, Portrait of Sir Isaac Newton at 47 years old, half length, wearing a brown cloak, leaning on a ledge, ca. 1689. Medium: Oil on canvas. Dimensions: [89.5 x 68.5 cm/35 1/4 x 27 inches] Frame: Original English giltwood, some chips and wear. Condition: Excellent, skillfully lined in the back. Provenance: (1) VISCOUNTS GALWAY, of Serlby Hall, Nottinghamshire, listed as purchased in 1725, described in article in 1867; Sold Christie's 23 March 1979, lot 124; (2) CHRISTOPHER SELMES, capitalist, art- collector, of Cheyne Walk and Lyegrove House nr Badminton; his sale, Christies, 26 September 1988, lot 332; (3) VERNE L. ROBERTS (1939-1007), engineer, inventor, book-collector (Bibliotecha mechanics 1991) of North California. (4) Private collector Exhibited: EFTA00587577