roy
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19 Oct 2017
08:21:47am | re: Philippine VON gronau C-31
Given the overprint, it is more likely an expertiser's mark. There are sites on the internet that list ("catalogue") expertiser's marks and identify some of the most important ones through history.
There was a previous long discussion of expertisers' marks earlier this month on this discussion board. Maybe somebody can find it an add a link -- I am being called away from my desk right now.
Roy
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SOME TIME AGO I GOT A LOT OFF E-BAY DESCRIBED AS SIGNED PI C29-C35 Von Gronau AIR MAIL issues this set is as the same as the normal set but on the reverse in the lower left corner there is stamped in red ARH ?? not in my specialized cat. Does anyone have any insight ??
