| Dandy
Roll
Wire-gauze roller which impresses the paper with its texture (wove,laid,
etc.) as the pulp leaves the vats to produce watermarks in the paper.
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| Definitive
Stamps
that are issued for ordinary postal needs and placed on sale for an unlimited
period as opposed to commemorative. By contrast with commerative,
definitive stamps tend to be more generic in concept, and/or to have
subjects that are relatively "timeless". Most importantly,
definitive stamps tend to remain on sale for a longer period, and are
not commemorating any particular thing.
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| Demonetised
Stamps
which are withdrawn from circulation and declared void for postal use.
Demonetised stamps sold to dealers, after overprinting with some device
are termed Remainders.
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| Design
Error
Errors by the artist in his original artwork.
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| Die
The
original piece of metal or material on which the stamps design is first
engraved before being reproduced to the printing machines.
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| Die
Proofs
They are normally printed in black, from the engravers completed die,
and submitted for official approval.
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| Doctor
Blade A
flexible steel blade which is used to removes surplus ink from the printing
cylinder on high-speed modern presses. Faulty
operation can cause flaws of a non-constant nature on the printed stamps.
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