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

Commemorative Postmark:

Day of use: 28. 01. 2011
 

Angličtina / English

Use translation by Google Translate (no guarantee).

Príležitostná ručná pečiatka používaná pri príležitosti inaugurácie poštovej známky Kultúrne dedičstvo Slovenska: Kostol sv. Juraja vo Svätom Jure.




Deň používania: 28. 1. 2011
Pošta: Svätý Jur
Farba: čierna
Autor: Adrian Ferda

Súvisiace materiály: Súvisiace podujatia:


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