GEORGE WASHINGTON 3c Rose

C Grill: about 13x16mm (16-17 by 18-21 points)

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

3c
Color
?
Original catalog color of the stamp.

Rose
Print method
?
Method of process of imprinting designs on paper.

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

12
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

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SP Special Peculiarity:

Grills C were made by a roller covered with ridges shaped like an inverted V. Pressing the ridges into the stamp paper forced the paper into the pyramidal pits between the ridges, causing irregular breaks in the paper.