Stamp: Postage Due - overprint S O 1920 (Czechoslovakia 1920)

Postage Due - overprint S O 1920 (Czechoslovakia 1920)

13 February (Czechoslovakia ) within release POŠTA V PLEBISCITNÍM ÚZEMÍ VÝCHODNÍHO SLEZSKA, ORAVY A spíše goes into circulation Stamp Postage Due - overprint S O 1920 face value 15 Czechoslovak haléř

Stamp Postage Due - overprint S O 1920 in catalogues
Michel: Mi:CS-SO P3
Yvert et Tellier: Yt:CS-SO T3
POFIS: POF:CS-SO 35

Stamp is square format.

SO 1920

Also in the issue POŠTA V PLEBISCITNÍM ÚZEMÍ VÝCHODNÍHO SLEZSKA, ORAVY A spíše:

Data entry completed
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Stamp Postage Due - overprint S O 1920 in digits
Country: Czechoslovakia
Date: 1920-02-13
Perforation: Imperforate
Emission: Postage Due
Format: Stamp
Face Value: 15 Czechoslovak haléř
Print run: 280000

Stamp Postage Due - overprint S O 1920 it reflects the thematic directions:

A number is a mathematical object used to count, measure, and label. The most basic examples are the natural numbers 1, 2, 3, 4, and so forth. Numbers can be represented in language with number words. More universally, individual numbers can be represented by symbols, called numerals; for example, "5" is a numeral that represents the number five. As only a relatively small number of symbols can be memorized, basic numerals are commonly organized in a numeral system, which is an organized way to represent any number. The most common numeral system is the Hindu–Arabic numeral system, which allows for the representation of any non-negative integer using a combination of ten fundamental numeric symbols, called digits. In addition to their use in counting and measuring, numerals are often used for labels (as with telephone numbers), for ordering (as with serial numbers), and for codes (as with ISBNs). In common usage, a numeral is not clearly distinguished from the number that it represents.

Stamp, Postage Due - overprint S O 1920, Czechoslovakia,  , Numbers