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

Postage Stamp:
150th anniversary of the Universal Postal Union

150th anniversary of the Universal Postal Union
Date of Issue: 09. 10. 2024
Face value: 1,50 €
Postage stamp dimensions: 44,1 x 26,5 mm
Printing sheet form: TL
Stamps in printing sheet: 50
Stamps in set: 1
Printing company: Tiskárna Hradištko, s.r.o., Czech Republic
Printing technique: Offset
Amount printed: 500000

Angličtina / English

Use translation by Google Translate (no guarantee).

Commemorative postage stamp issued to mark the 150th anniversary of the Universal Postal Union.


Text motifs: UPU

Pictorial motifs: Grafika

Postage stamp artwork: Doc. Mgr. Art. Marcel Benčík

Adjusted printing sheet:

Postage Stamp 150th anniversary of the Universal Postal Union (Adjusted printing sheet)


Original artwork(s):

Postage Stamp 150th anniversary of the Universal Postal Union (Original artwork(s))


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