Copy of letter concerning the values of standards

Author: Isaac Newton

Source: MINT 1/7/61, National Archives, Kew, Richmond, Surrey, UK

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  - 17 October 2016
    - Transcribed by Will Scott
  - 9 January 2017
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<61>

To the R^t Hon^ble: the Lords Comm^rs: of Her Majestys Treasury

May it Please Your Lordships

In Obedience to Your Lordships verbal Order concerning the Value of several standards for Plate we humbly lay before your Lordships

That old Plate of eleven ounces two pennyweight of fine silver in the pound weight Troy being of the same standard with the money is of the same value w^ch: is 5^s: 2^d ꝑ ounce.

That new Plate of eleven ounces ten penny weight of fine silver in the pound weight Troy is worth 5^s: 4^d & $\frac{26}{111}$ parts of a penny of about 5^s: 4^d $\frac{1}{4}$ per ounce.

The Plate of Ten ounces 15 penny weight of fine silver in the pound weight Troy would be worth 5^s & $\frac{5}{111}$ parts if a penny, or 5^s and about the sixth part of a farthing ꝑ ounce. And if the Fraction which is inconsiderable be neglected, it may be reckoned at 5^s ꝑ ounce.

That Plate of ten ounces four pennyweight of fine silver in the pound weight Troy would be worth 4^s. 9^d. wanting about the 9^th part of a farthing ꝑ ounce. And if the fraction w^ch: is inconsiderable be neglected, it may be reckoned worth 4^s: 9^d ꝑ ounce.

That Plate of eleven ounces of fine silver in the pound weight Troy would be worth 5^s: 1^d $\frac{1}{2}$ ꝑ ounce abating $\frac{13}{222}$ parts of a penny or a quarter of a Farthing.

And we further take leave to make as near an Estimate as we can of the value of the Plate already made

That old Plate is worth about 5^s & a farthing ꝑ ounce for an abatement must be made of about 6^d. or 7^d. ꝑ lwt. for the worseness of the plate, & 10^d. or 12^d ꝑ Lwt for the worseness of the Soder, & 1^d. for the Charge of melting it into Ingotts & 2^d $\frac{1}{2}$ or 3^d ꝑ lwt for the Waste in that melting, that is in all about 21^d ꝑ Lwt, or seven farthings ꝑ Ounce.

That new Plate according to the best of our Iudgements is worth about 5^s: 2^d $\frac{1}{4}$ ꝑ ounce, for an abatement must be made of about 8^d. or 10^d. ꝑ Lwt for the worseness of the Plate, & 10^d. or 12^d. ꝑ Lwt for the worseness of the Soder and 1^d ꝑ Lwt for the charge of melting it into Ingotts, & 2^d $\frac{1}{2}$ or 3^d ꝑ Lwt for the Wast{e} in that melting, that is, in all about 2^s. ꝑ Lwtor 2^d. ꝑ ounce.

All w^ch: is most humbly submitted to your Lordships great Wisdom

C P. Is: N I. Ell

^[1]

^[1] 25. Ap^l. 1711.