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

Service des postes:

Date of Issue: 18. 12. 1995
 

Angličtina / English

Use translation by Google Translate (no guarantee).

Služobná obálka Slovenský štátny znak (MDSVP SR).




Služobná obálka
Slovenský štátny znak (MDSVP SR)


Deň vydania: 18. 12. 1995
Nominálna hodnota: 8 Sk
Autor známky:
Predajná cena: Nepredajné




Zdroj: Slovenská pošta/POFIS


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