Russia: USSR, 20th Anniversary of Republic of North Viet Nam - Flag of North Viet Nam, Factory and Palm 6k Red, yellow, brown & gray

Country Russian Federation
Denomination
?
Face value of a stamp, usually printed on the stamps.
— Glossary

6k
Color
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Original catalog color of the stamp.

Red, yellow, brown & gray
Print method
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Method of process of imprinting designs on paper.

Lithographed
Perforation
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Holes punched between stamps to make separating easier.
— Basic philately terms for amateurs

12
Watermark
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A pattern embedded in a paper during stamp producing process.
— Basic philately terms for amateurs

Unwatermarked
Issue Date
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Date inscripted on a stamp or cancellation for used stamps not necessary correspond to real date of stamp issue.
#
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Catalog number of stamp.
— Basic philately terms for amateurs

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