Karl Marx (1818-83), 140th birth anniversary: Karl Marx Speaking to German Workers’ Educational Association, London, painting by Zhukow - 马克思 (1818-83) 诞生一四〇周年纪念:马克思在伦敦德国工人教育协会上作报告 22f Dark green

- Country People`s Republic of China
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Denomination
?22fFace value of a stamp, usually printed on the stamps.— Glossary
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Color
?Dark greenOriginal catalog color of the stamp.
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Print method
?EngravedMethod of process of imprinting designs on paper.
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Perforation
?14Holes punched between stamps to make separating easier.
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Watermark
?UnwatermarkedA pattern embedded in a paper during stamp producing process.
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Issue Date
?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.