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3D3DDow magnesium medallion.
A medallion commemorating Dow Chemical's foray into magnesium metal production, apparently from magnesium salts in seawater since it says "The Metal from the Sea". One of these days I'm going to photograph my Dow magnesium canoe.
Source: eBay seller tecollectables
Contributor: Theodore Gray
Acquired: 2 April, 2009
Text Updated: 7 April, 2009
Price: $15
Size: 2"
Purity: 99%