Scientists of Ancient China: Huang Daopo, textile expert, 13th century - 中国古代科学家: 黄道婆 (公元十三世纪中叶 - 十四世纪初), 元代纺织技术家 60f Multicolored
- Country People`s Republic of China
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Denomination
?60fFace value of a stamp, usually printed on the stamps.— Glossary
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Color
?MulticoloredOriginal catalog color of the stamp.
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Print method
?Photogravure & EngravedMethod of process of imprinting designs on paper.
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Perforation
?11 1/2x11Holes 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.
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