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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.

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

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.

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.