OFFICIAL
VARIETIES: Official Government Issues
n Perforations:
Different measurements, methods
n Experimental
Perforations and roulettes perfins (e.g. OHMS)
n Pre-cancels:
Different types and styles.
n Tabbed or
otherwise treated for use in automated equipment
n Printed
Information on Reverse, attached label, or selvage
n Specimens: Black
prints and other publicity items
n Surcharges: Revalued
issues
n Overprints:
Geographic, commemorative, etc.
n Mirror
Prints
n Gum
Varieties
n Paper
Varieties
n Test Stamps: For testing or dispensing machines
Read More….
in Issue No.70 of "ITS Stamp News"
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