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1887
Volume 48, Issue 2
  • ISSN: 0032-1400

Abstract

Heraeus has in its possession four platinum rouble coins and one commemorative platinum medallion minted between 1826 and 1844. In order to determine their composition and to learn a little more about the methods used in their manufacture, they have been subjected to various techniques of non-destructive examination. These have included a developmental SQUID microscope specifically used to look at magnetic effects due to the iron content.

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2004-01-01
2024-02-22
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  • Article Type: Research Article
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