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3D3DThe Hammer Radium Spinthariscope.
I'm not sure what "The Hammer" means, but this is a fairly nice little radium spinthariscope. Spinthariscopes are explained in more detail here.
Source: eBay seller watsgotslots
Contributor: Theodore Gray
Acquired: 19 May, 2007
Text Updated: 19 May, 2007
Price: $86
Size: 1.25"
Purity: <1%
Sample Group: Spinthariscopes
Radium