I have a Austria 1950 10s Gray - S.C. 556. What I'd like to know is if this is the "Flat white gum" variety. The gum to me looks flat and white. Just need someone to confirm please.
Thanks dutchman. Your right, it doesn't appear to be that white. The description I see (from internet sources) for paper is "grey yellow". The description for the gum is "yellow and ribbed". The back is definitely not ribbed - definitely not yellow - so my only alternative according to my materials is flat / white. Maybe it is due to age or what the stamp was hinged on.
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