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Manuscript volume, [1729], containing an monthly account of the differences in exchange between London and Amsterdam from Mar 1697 to Dec 1728.

Manuscript volume, [1580], containing instruction for all (Dutch) Exchangers for the alteration of coinage books and manuals following a proclamation that the fortieth part of all golden moneys is to be reserved for their salaries. The manuscript gives translations of the mottoes on various coins in place of the engravings of the coins found in the printed book.

Manuscript volume relating to trade in the Far East, 1691-1732, containing transcripts of letters, memoranda, exchange rates, lists of prices, and instructions for the prices of goods, compiled by a Captain of the East India Company trading between China, India and England. The volume includes an account of the state of trade in India by Sir Nicholas Waits, 1699; an account of the state of trade at Surat, India, by Samuel Lock, 1705; a Chinese merchant's advice relating to trade between India and China; various advice and directions for the purchasing of drugs, tea, musk, raw silk, ivory and beeswax; details of customs charges at Canton, 1704; instructions for the purchase of gold and pearls at Madras, India; orders and instructions given by the Directors of the East India Company; a description of the manufacture of lacquer in China, 1708, an essay on a hydrostatical method of discovering the fineness of gold, and an logarithmical table for finding the rate of exchange between dollars and pagodas, 1732, all by Isaac Pyke, Governor of St Helena.

Correspondence between Henry Hucks Gibbs and Edward Lucas Jenks Ridsdale (Chief Assayer of the Royal Mint), on bimetallism (i.e. the use of a monetary standard based on both silver and gold), 1876-1884. Including a letter from E Koch to Gibbs, thanking him for permission to translate a pamphlet on bimetallism into German.

Letter from William Henry Rowlestone Jessop of Grove House, St David's, Haverfordwest, [Pembrokeshire] to an unidentified correspondent, 17 Oct 1855. Accompanying a copy of his work on the decimal system: '... it is the first book which embraces the whole System of Money and Measures that has yet appeared ... You will perceive that this system is very superior to that in France [i.e. to the metric system]'.

Autograph, with signature.

Letter from Thomas Babington Macaulay of Holly Lodge, Kensington to Augustus De Morgan, 7 Nov 1857. Thanking him for a copy of his pamphlet [Answers to the questions communicated by Lord Overstone to the Decimal Coinage Commissioners; (London, 1857)]. 'I will frankly own to you that you seem to me greatly to overrate the advantages and greatly to underrate the inconveniences of the change which you recommend.

Autograph, with signature.

Manuscript volume containing transcripts of various proposals concerning the reformation of the coinage, 1695-1696, made in response to a request by the Exchequer for views on ideas discussed in A report...for the amendment of the silver coins (1695) by William Lowndes, Permanent Secretary of the Treasury. Comprising papers on the coinage by Sir Christopher Wren, Dr John Locke, Gilbert Heathcote, Alderman [Francis] Gardner, [Rev] Samuel Pratt [Dean of Rochester], [William] Corbet, Sir John Houblon, Dr John Wallis, Dr Isaac Newton, and William James, with further treatises entitled 'A merchant's demonstration superior to imagination, that the raising of bullion cannot be anyways injurious but highly advantageous to these three kingdoms above all others', and 'Some considerations offered to the House of Commons in relation to mending the coyne'. A note written in 1963 by E S de Beer regarding several of the items described above is inserted into the manuscript.

Manuscript volume, 1573, containing documents and tables relating to the Royal Mint, including papers on the prevention of counterfeiting and clipping of coins, and methods of replenishing the circulation of silver coins.

Manuscript volume, 1795, entitled 'The European negotiator or Exchange operations elucidated. Containing the denominations and values of the monies of accompt. - The course of exchange, the usances and days of grace of all the commercial cities in Europe and the reciprocal reduction of their monies into those of every place with which they have established exchanges...Also arbitration of exchange...Tables of foreign monies, weights and measures equated and compared with those of England. A table of duties on goods passing the sound...'. There is a note adding additional information, 1799, on f.53r.