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Old 01-25-2019, 10:18 AM
prewarsports prewarsports is offline
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Conlon used different paper sizes and types throughout his career and as far as I know, those are not used in dating. I have also seen his earlier stamps re-used on later paper making a definitive dating even more difficult. I tried for a few years to make a catalog of these for more accurate dating, but he made it pretty difficult!
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Last edited by prewarsports; 01-25-2019 at 10:18 AM.
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