- Polyvinyl Alcohol
P. - Abbreviation for 'Proof'; i.e. the item is a die proof, or an impression taken to prove the accuracy of the impression.
dex (generally speaking, it appears "yellow")
PVA (polyvinyl alcohol) - white or coloured depending on the paper manufacture
Davac - gum is clear and tasteless
'Coloured' gum ...
The common kinds of postage stamp adhesives are gum Arabic (glossy), polyvinyl alcohol gum (matte and colorless), and PVA dextrin gum (greenish color).
Parts of postage stamps related articles: ...
Polyvinyl alcohol: an adhesive product used instead of gum arabic and other adhesives for stamps.
dextrin, produced by heating starch
gum arabic or acacia gum, derived from the acacia plant
glue, from gelatin, rarely seen on stamps
polyvinyl alcohol (PVA) ...
P
P.C. - Passed Censor.
P.D. - Paid to destination
P.O.A. - Post Office Agency or Price On Application.
P.P. - Pulled Perforation.
P/SET - Part set, contains some stamps from an issue.
P.V.A. - Polyvinyl Alcohol ...
 See also: Printing, Perforation, Adhesive, Gum, Applied
  
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