A

Acknowledgement of receipt stamp - forms used as prepayment on…
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B

Balloon Post, Siege of Paris (1870-71) - a system devised…
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C

Cachet - a printed, embossed, or hand struck inscription, with…
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D

Definitive issue - a stamp issued in an indefinite quantity…
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E

E-COM - an acronym for Electronic Computer-Originated Mail. The service…
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F

Facing - identification mark which consists of a series of…
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G

General Post Office - common term for the administrative entity…
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H

Handstamp - a stamp or overprint which has been applied…
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I

lllustrated envelopes - illustrated or imprinted envelopes often used for…
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J

Joint lines - lines that appear on gutters between sheets…
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