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

Peru

Peru
Published: 06. 10. 2016 09:09

Angličtina / English

Use translation by Google Translate (no guarantee).



Peru (PERÚ)


2014 - 20 rokov Peruánskej poštovej služby Serpost


Relevantné atribúty: Poštová známka (v strede medzi číslicami "2" a "0" dole) - vlajka Slovenska.

Slovaciká - Peru - 20 rokov Peruánskej poštovej služby Serpost - Vlajka Slovenska


Pozri tiež: ...

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