Interest in the entires and covers of Zvolen companies

I am interested in the purchase of postal material - postal cards, entires, covers of Zvolen companies...

15. 05. 2023

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 ...or philatelists for themselves
OLYMPSPORT - Czech Association for Olympic and Sport Philately
ZSF - Union of Slovak Philatelists