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Abstract of His Majesty's royal letters patent. George R. ... Whereas, R. Darby and Co. have, with much labour and study, invented a portable instrument for detecting frauds by counterfeit gold, ...
- Format:
- Book
- Author/Creator:
- R. Darby and Co.
- Language:
- English
- Subjects (All):
- Gold standard--Early works to 1800.
- Gold standard.
- Genre:
- Advertisements.
- Physical Description:
- 1 online resource (18p. )
- Place of Publication:
- [Gloucester?, 1753?]
- Notes:
- Cover-title: 'By virtue of His Majesty's royal letters patent, granted unto R. Darby, and Co. .. '.
- Reproduction of original from British Library.
- Cited in:
- English Short Title Catalog, T122549.
- OCLC:
- 642333990
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