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拍品专文
The source for the present bust is probably a terracotta bust, signed by Rysbrack and dated 1739 at Trinity College, Cambridge. When asked to make reproductions of his busts Rysbrack often employed Peter Vannini (active 1753-70) to make the moulds for him. This is clear from a letter written by Rysbrack to his patron Sir Edward Littleton on 21 January 1758 where he states 'I have enquired of Mr Vannini, the Caster in Plaster in Paris (Whom I Employ when I want) what the expense will be, of a Mould off of your Honour's Bust, and each Cast out of it' (Webb, loc. cit.).
Ingrid Roscoe writes that Vannini had a wide selection of plaster busts and a repertoire of finishes including 'plaster bronzes' and also notes an untraced bust of Sir Isaac Newton by his hand (loc. cit). There is another plaster bust of Newton in the British Museum, that is identical to the present bust although lacking the bronzed finish, that Aileen Dawson has suggested could be the work of Vannini (Dawson, loc. cit.).
Ingrid Roscoe writes that Vannini had a wide selection of plaster busts and a repertoire of finishes including 'plaster bronzes' and also notes an untraced bust of Sir Isaac Newton by his hand (loc. cit). There is another plaster bust of Newton in the British Museum, that is identical to the present bust although lacking the bronzed finish, that Aileen Dawson has suggested could be the work of Vannini (Dawson, loc. cit.).