EAST CHINA: Sun Yat-sen, Surcharged in Black - 华东：孙中山 (加盖黑 “中华人民邮政华东区” 字改值邮票) $400 on $200 Orange red

Without Gum

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

$400 on $200
Color
?
Original catalog color of the stamp.

Orange red
Print method
?
Method of process of imprinting designs on paper.

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

12 1/2
Watermark
?
A pattern embedded in a paper during stamp producing process.
— Basic philately terms for amateurs

Unwatermarked
Issue Date
?
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