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
Complete description

New releases, inaugurations, the most beautiful stamps, competitions:
First postage stamp without numeric nominal value was issued

First postage stamp without numeric nominal value was issued
Author: Vojtech Jankovič
Source: www.pravda.sk
Published: 15. 02. 2007 18:53

Angličtina / English

Use translation by Google Translate (no guarantee).

Informácia o vydanie prvej slovenskej poštovej známky, ktorá namiesto číslenej nominálnej má popisnú nominánu hodnotu.

Základné informácie:


Author: Vojtech Jankovič
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