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1.
Petitions for a licence to coin £180,000 in copper and criticises Newton's specimen copper coins as being made of inferior copper and given a high artificial gloss which will soon wear off
2.
Report (as ordered by the Treasury) on various methods of ascertaining the purity of copper, and the deficiencies of most methods
Showing 1–2 of 2 | Sorted by: Newton Catalogue ID (ascending)