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If a ℔ Troy of Gold be cut into 44⁤12 guineas, then the weight of each guinea will be 129⁤3989 grains, or 129⁤4381000.

If 20 grains remedy be allowed ꝑ ℔, aguinea may weigh from 129⁤7989 grains or 129⁤887610000 for the heaviest, to 128⁤8889 for the Lightest.

44⁤12 guineas each weighing 130 grains, will weigh exactly 25 grains above a pound Troy:

And 44⁤12 guineas each weighing 129 grains will be 19⁤12 grains lighter than a ℔ Troy. So that a guinea should alway weigh betwixt 129 and 130 grains.

If a ℔ Troy of Gold be cut into 44⁤12 guineas, and each gain be valued at £1:1. then 1oz. 1.dwt 1gr. }  of Gold is worth  { 3£:17:10⁤12 0:3:10⁤2940 0:0:1⁤101105

Hence in practise, ℔ odd grains may be always valued at 2d; the error in adwt amounting only to 1d⁤14. but in an oz. it will be 2′:1d⁤12.

According to the Warrant for Coining Copper for Ireland, an Irish halp{illeg}|enny| should \weigh/ 4⁤1213 drams; and the remedy ꝑ ℔ Averdupois (being 130) is 1⁤1115 half-penny.

Average of the lightness ꝑ ℔ upon ℔ whole Coinage in 1736 is 9⁤955810000 grains; And this fraction is a profit to the bank of 14 oz. 1dwt & 18 grains of Gold = £54: 18: 4

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a Paper by Mr Cartlitch concerning the standard

Mint Paper In Conduitts Hand

© 2026 The Newton Project

Professor Rob Iliffe
Director, AHRC Newton Papers Project

Scott Mandelbrote,
Fellow & Perne librarian, Peterhouse, Cambridge

Faculty of History, George Street, Oxford, OX1 2RL - newtonproject@history.ox.ac.uk

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