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Non-issued stamps with Warsaw monuments. These stamps were overprinted 'Poczta Polska' to become postage stamps after World War I when Poland recovered its independence.
III A IV A V A VI A Zygmunt column Syrena on a Polish eagle Jan III Sobieski |
III B IV B V B VI B Zygmunt column Syrena on a Polish eagle Jan III Sobieski |
See the official postage stamps that were made from this issue in 1918