DavidG
APS member since 2004 04 Feb 2016 03:16:58pm | re: Canadian #301 -Color variation
What you have is a chemical changeling.
David Giles
Ottawa, Canada
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roy
BuckaCover.com - 80,000 covers priced 60c to $1.50 - Easy browsing 300 categories 04 Feb 2016 04:42:21pm | re: Canadian #301 -Color variation
I second that. Light or chemical exposure (sometimes atmospheric chemicals), or both.
Roy
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