150 years of scientific observations of the Earth

Commemorative postage stamp issued to commemorate 150 years of scientific observations of the Earth.

27. 05. 2022

Pictorial Postal Card

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Philatelic partners

POFIS - Postal philatelic service
EXPONET - Virtual international philatelic exhibition
Slovak Society of Olympic and Sports Collectors
Filaso.cz ...or philatelists for themselves
OLYMPSPORT - Czech Association for Olympic and Sport Philately
ZSF - Union of Slovak Philatelists