A new touch-stone for gold and silver wares [electronic resource] : directing all buyers of large plate or small works ... how to know whether they buy or wear such as are of the lawful standard-allay or adulterated and unlawful, and how to recover recompence against the offenders : and also discovering the principal matters of the goldsmiths and cutlers ... trades / by W.B. ... ; to which is likewise added, the useful and easie tables of Mr. John Reynolds ... plainly shewing how to cast up and make all sorts of gold and silver true standard

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