Receipt for weighing machines and trial pieces
May 26. 1700
Receiv'd of Isaak newton esqr late warden of his majesties mint, three tryall pieces of standard gold; one weighing one ounce, eleven penny weight, fiveteen grains. the 2d piece weighing, one ounce, twelve penny weight, fourteen grains. the third piece, two ounces, two penny weight, seaventeen grains. Also two Indented pieces of standard silver. the first weighing six ounces, two penny weight twenty grains. the second, eight ounces nineteen penny weight, seaventeen grains. I say receiv'd by me
I Stanley
<text in Isaac Newton’s hand begins>Memorandum the Trial piece weighing 1oz 12dwt 14gr is 23car 3gr fine, the other two trial pieces for gold are 22car fine & 2car Allay. Those for silver are 11oz 2dwt fine & 18dwt allay.
Source
MINT 19/1/283, National Archives, Kew, Richmond, Surrey, UK26 May 1700, c. 120 words.