When blue is blue

Scientific treatise and study on the composition of the paint on the Protectorate 5h blue linden leaf stamp. Study of the dependence of the amount of paint on the color shade of postage stamps.

03. 05. 2025
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Organized philately:
Those were the XXXI Slovak Philately Days 2014 in Poprad

Those were the XXXI Slovak Philately Days 2014 in Poprad
Author: Vojtech Jankovič (autor fotografií Ján Denk)
Source: ZSF
Published: 07. 10. 2014 23:34

Angličtina / English

Use translation by Google Translate (no guarantee).

Krátka fotoreportáž z XXXI. Dní filatelie Slovenska v Poprade.


XXXI. Dni filatelie Slovenska 2014 v Poprade

XXXI. Dni filatelie Slovenska 2014 v Poprade

XXXI. Dni filatelie Slovenska 2014 v Poprade

XXXI. Dni filatelie Slovenska 2014 v Poprade

XXXI. Dni filatelie Slovenska 2014 v Poprade


Vyjadrenie zakladateľa DFS JUDr. Otta Gáťu k XXXI. DFS v Poprade nájdete na internetovej klubovej stránke Klub filatelistov 54-17 Poprad.


Author: Vojtech Jankovič (autor fotografií Ján Denk)
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