National collectors exchange bourse with international participation in Levice (Slovakia)

Invitation to the national collectors exchange bourse with international participation in Levice (Slovakia).

14. 06. 2026
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111th anniversary of astronomical observations by M. R. Štefánik in Tonga (Žilina)

111th anniversary of astronomical observations by M. R. Štefánik in Tonga (Žilina)
Day of use: 27. 05. 2022
 
Post office: ŽILINA 1
Colour: black

Occasional postmark used in Žilina on the occasion of the 111th anniversary of astronomical observations by M. R. Štefánik in Tonga.

Text motifs: 111. VÝROČIE ASTRONOMICKÝCH POZOROVANÍ / M. R. ŠTEFÁNIKA NA TONGE / 1911 / 2022

Pictorial motifs: Symbolické slnko a polmesiac

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