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: 12. 11. 2010
 

Angličtina / English

Use translation by Google Translate (no guarantee).

Poštový lístok s natlačenou známkou Gotická pečať z Trnavy s prítlačou k Národnej mládežníckej filatelistickej výstave JUNIORFILA 2010 v Nitre.




Deň vydania: 12. 11. 2010
Nominálna hodnota: 0,40 €
Autor známky: Adrian Ferda
Autor prítlače: Adrian Ferda
Predajná cena: 0,50 €

Súvisiace materiály: Súvisiace podujatia:


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