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 without Imprint:
Historical postal motif - Post Horn

Historical postal motif - Post Horn
Date of Issue: 24. 07. 2015
Face value: T2 50g 

Angličtina / English

Use translation by Google Translate (no guarantee).

Postal (correspondence) pre-stamped card with embossed stamp depicting post horn.


Text motifs: Natlačená známka: nie je; © Slovenská pošta 243 CDV 243/15

Pictorial motifs: Natlačená známka: poštová trúbka.

Autor známky: Adrian Ferda
Predajná cena: 0,48 €


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