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

Postal Card with imprint:

Date of Issue: 14. 05. 2009
 

Angličtina / English

Use translation by Google Translate (no guarantee).

Poštový lístok s natlačenou známkou Architektúra predrománskeho a románskeho obdobia - Čierny Brod s prítlačou k 40. výročiu založenia Zväzu slovenských filatelistov (ZSF).




Deň vydania: 14. 5. 2009
Nominálna hodnota: T2 50 g (pozri prevod taríf)
Autor známky: Peter Biľak
Autor prítlače: Adrian Ferda
Predajná cena: T2 50 g + 0,10 €

Súvisiace materiály:


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