Catalogue Entry: MINT00175

Holograph queries about standards of trial plates.

Author: Isaac Newton

Source: MINT 19/1/274, National Archives, Kew, Richmond, Surrey, UK

[Normalized Text] [Diplomatic Text]


Refiners have recently found ways of refining gold and silver to above 24 carats and 12 ounces respectively, which can result in over-refined trial plates making perfectly good coinage appear sub-standard.

© 2020 The Newton Project

Professor Rob Iliffe
Director, AHRC Newton Papers Project

Scott Mandelbrote,
Fellow & Perne librarian, Peterhouse, Cambridge

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