Dr. Sun Yatsen, Overprinted in Blue - 蓝色印的孙逸仙博士 7c on 8c Olive green

Type III, with Secret Mark; h7 (h — Fukien)

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

7c on 8c
Color
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Original catalog color of the stamp.

Olive green
Print method
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Method of process of imprinting designs on paper.

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

12 1/2, 14
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.
#
?
Catalog number of stamp.
— Basic philately terms for amateurs