Celtic Cross: Types of 1922-23 3p dull blue

Size: 18x22mm

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

3p
Color
?
Original catalog color of the stamp.

dull blue
Print method
?
Method of process of imprinting designs on paper.

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

15x14
Watermark
?
A pattern embedded in a paper during stamp producing process.
— Basic philately terms for amateurs

Multiple “e”
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