News on the information philatelic portal www.postoveznamky.sk (1/2026)

Information about news on the philatelic portal www.postoveznamky.sk (1/2016).

03. 02. 2026
Complete description

Measurement of perforation of postage stamps

Measurement of perforation of postage stamps
Author: Rudolf Šulej
Source: www.postoveznamky.sk / www.filatelia-kosice.eu
Published: 02. 02. 2019 18:30

Reflection on the methods of measuring Slovak postage stamps perforation and the results that brought in a more accurate measurement by a professional sliding scale.




Author: Rudolf Šulej

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