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

Personalised adjusted printing sheet (PersUTL):
1st Slovak-Czech philatelic exhibition NITRAFILA 2013

Date of Issue: 03. 07. 2013

Face value: T2 50g

Postage stamp dimensions: 32,5 x 26,5 mm + k 32,5 x 26,5 mm

Printing sheet form: UTL

Stamps in printing sheet: 8

Use translation by Google Translate (no guarantee).

Personalised miniature sheet (UTL) with postage stamp 40th anniversary of the ZSF devoted to the 1st Slovak-Czech philatelic exhibition NITRAFILA 2013.

Adjusted printing sheet:

Personalizovaný upravený tlačový list (PersUTL) so známkou 40. výročie založenia ZSF k 1. slovensko-českej filatelistickej výstave NITRAFILA 2013 v Nitre je klasifikovaný ako súkromný - objednávka a grafický návrh: ZSF.

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