A new touch-stone for gold and silver wares : Directing all buyer of large plate, of small works, (as silver or gold hilts, buckles, watch-cases, pins and studs in watch-cases, money-boxes, tobacco-boxes, bells and sockets for corals, buttons and tags for garments, chirurgeons-instruments, rings, chains, lockets, or other goldsmiths works) how to know whether they buy or wear such as are of the lawful standard-allay, or adultered and unlawful; and how to recover recompence against the offenders. And also discovering the principal matters of the goldsmiths and cutters (and material things of all other manual) trades. The second edition, corrected and much enlarged, by W.B. of London, goldsmith. To which is added, the useful and easie tables of Mr. John Reynolds, of the mine, (with a key to the same) plainly shewing how to cast up and make all sorts of gold and silver true standard.
by: W. B. (William Badcock)