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:
International collectors fair SINDELFINGEN 2017

International collectors fair SINDELFINGEN 2017
Date of Issue: 26. 10. 2017
 

Angličtina / English

Use translation by Google Translate (no guarantee).

Postal (correspondence) card with embossed stamp Good Idea Slovakia with imprint to the International collectors fair SINDELFINGEN 2017 in Sindelfingen (Germany).


Text motifs: SIN / DEL /FIN / GEN / 2017

Pictorial motifs: Známky a listy stromov v jesenných farbách.

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