AIR POST STAMPS - WIPA 1965 (Belvedere Palace, Vienna) 1.40k violet, yellow & deep orange

Size: 30x50mm

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

1.40k
Color
?
Original catalog color of the stamp.

violet, yellow & deep orange
Print method
?
Method of process of imprinting designs on paper.

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

11 1/2
Watermark
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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