Basic illustration of measuring for Specific Gravity. Image courtesy of University of Walkato in New Zealand.
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Recent News
- New Appointee Joins Citizens Coinage Advisory Committee March 16, 2019
- Paul Whitnah Shares Stories of Famous Coin Collectors, May 10, 2008 March 13, 2019
- Unparalleled Numismatic Wonders Just Weeks Away March 12, 2019
- Submissions Accepted for ANA Young Numismatist Literary Awards March 12, 2019
- 2019 United States Mint Proof Set Now Available March 12, 2019
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