25 October, 2005 (2)
25 October, 2005
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Text and images Copyright (c) 2010 by Theodore W. Gray.
Antique powder flash.
Source:
eBay seller oakwilde
Contributor:
Theodore Gray
Acquired:
25 October, 2005
Text Updated:
29 January, 2009
Price: $38
Size: 1.25"
Purity: 95%
Radium scintillation slide.
Source:
eBay seller tamagno
Contributor:
Theodore Gray
Acquired:
25 October, 2005
Text Updated:
9 May, 2007
Price: $60
Size: 3"
Purity: <0.1%
Sample Group:
Spinthariscopes
