Airgraph Types
Specialist collectors of Airgrahs recognise four major types of UK Airgraph envelopes, with 15 varieties.
Airgraph collecting can easily become quite complex
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Type 1 envelopes have winged arrow symbol with rectangular window
Type 2 envelopes have winged arrow symbol with oval window, 'No. 243.' above symbol.
Type 3 envelopes have cloud symbol with oval window (Envelopes from the Christmas period have red square in place of day in date, or no date at all)
Type 4 envelopes - As type3 but cancel in blue, made and printed by Dickinson.
All except type4 are found with wavy line (Universal) or double ring (Pitney Bowes) cancels
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