Note by John Cartlitch on the remedy for guineas and Irish halfpence

Author: John Cartlitch

Source: MINT 19/5/5, National Archives, Kew, Richmond, Surrey, UK

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- Revision History
  - 1 January 2001
    - Catalogue information compiled by Rob Iliffe, Peter Spargo & John Young
  - 29 September 2011
    - Catalogue exported to teiHeader by Michael Hawkins
  - 3 February 2020
    - Transcribed by Robert Ralley.
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<5r>

If a ℔ Troy of Gold be cut into $44 \frac{1}{2}$ guineas, then the weight of each guinea will be $129 \frac{39}{89}$ grains, or $129 \frac{438}{1000}$ .

If 20 grains remedy be allowed ꝑ ℔, aguinea may weigh from $129 \frac{79}{89}$ grains or $129 \frac{8876}{10000}$ for the heaviest, to $128 \frac{88}{89}$ for the Lightest.

$44 \frac{1}{2}$ guineas each weighing 130 grains, will weigh exactly 25 grains above a pound Troy:

And $44 \frac{1}{2}$ guineas each weighing 129 grains will be $19 \frac{1}{2}$ 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 $44 \frac{1}{2}$ guineas, and each gain be valued at £1:1. then $\begin{array}{l} \begin{matrix} 1 oz. \\ 1 . d^{wt} \\ 1 gr. \end{matrix}} & of Gold is worth & {\begin{matrix} \overset{£}{3} : 17 : 10 \frac{1}{2} \\ 0 : 3 : 10 \frac{29}{40} \\ 0 : 0 : 1 \frac{101}{105} \end{matrix} \end{array}$

Hence in practise, ℔ odd grains may be always valued at 2^d; the error in ad^wt amounting only to $1^{d} \frac{1}{4}$ . but in an oz. it will be $2' : 1^{d} \frac{1}{2}$ .

According to the Warrant for Coining Copper for Ireland, an Irish halp{illeg}|enny| should \weigh/ $4 \frac{12}{13}$ drams; and the remedy ꝑ ℔ Averdupois (being $130$ ) is $1 \frac{11}{15}$ half-penny.

Average of the lightness ꝑ ℔ upon ℔ whole Coinage in 1736 is $9 \frac{9558}{10000}$ grains; And this fraction is a profit to the bank of 14 oz. 1^dwt & 18 grains of Gold = £54: 18: 4

<5v>

a Paper by M^r Cartlitch concerning the standard

Mint Paper In Conduitts Hand