List of articles:

Counterfeit perforation of the miniature sheet The Commemorative First Euro Postage Stamp (24.02.2009)

Objav falzifikátu dodatočnej perforácie hárčeka Pamätná prvá eurová známka.

Protective elements of Slovak postage stamps and stationery (26.09.2014)

Študijný článok venovaný ochranným prvkom použitých pri tlači slovenských poštových známok a celín.

History of customs - Variants of coupons and production faults (28.11.2014)

Ukážky variantov kupónov a niektoré výrazné výrobné chyby príležitostnej poštovej známky Dejiny colníctva, ktorá vyšla v špeciálnej úprave tlačového listu.

Day of postage stamp: Severín Zrubec (1921 – 2011) - Variants of coupons (13.02.2015)

Ukážky variantov kupónov príležitostnej poštovej známky Deň poštovej známky: Severín Zrubec (1921 – 2011), ktorá vyšla vo veľmi špeciálnej úprave krížom perforovaného tlačového listu.

Findings on the postage stamp Pofis no. 580 - Cultural heritage of Slovakia: Krasnohorske Podhradie - Andrássy Mausoleum (09.01.2015)

Findings on the postage stamp Pofis no. 580 - Cultural heritage of Slovakia: Krasnohorske Podhradie - Andrássy Mausoleum.

Findings on the postage stamp Pofis no. 579 - Day of postage stamp: Severín Zrubec (1921 – 2011) (14.02.2015)

Findings on the commemorative postage stamp Day of postage stamp: Severín Zrubec (1921 – 2011), which was issued in a very special arrangement with cross perforated printing plane.

Findings on the postage stamp Pofis no. 584 - Bone Marrow Transplantation Unit (20.03.2015)

Findings on the commemorative postage stamp Bone Marrow Transplantation Unit.

Variants of coupons of postage stamp Vladimír Dzurilla (1942 – 1995) (12.04.2015)

Samples of variants of coupons of the commemorative postage stamp Sport: Vladimír Dzurilla (1942 – 1995), being issued again in a bit strange printing pane form.

The procedure for making enlargements of images of printing flaws, plate variant deviations and plate errors on postage stamps (27.06.2015)

A short handy description how to make and save proper enlargements of images of printing flaws, plate variant deviations and plate errors on postage stamps supplemented by a practical demostration.

Breast Cancer Research - Special Joint Stamp Issue (07.10.2015)

Article devoted to the overview of postage stamps which were and still are issued in a special joint stamp issue for the Breast Cancer Research.

Biennial of Illustrations Bratislava 2015 - Variants of coupons (12.09.2015)

Coupon variants of the commemorative postage stamp Biennial of Illustrations Bratislava 2015 issued in a special printign sheet with several coupons.

Counterfeit of the production error of the Slovak postage stamp Art: Dusan Samuel Jurkovic – Society House in Skalica (29.12.2016)

Sample procedure for identifying counterfeit of production error of the Slovak stamp Art: Dusan Samuel Jurkovic – Society House in Skalica.

Does the sun pulls-out only red colour? (03.07.2016)

A short reflection on the discolouration on stamps from sunlight.

Production errors on a commemorative postage stamp 100 years of scouting (Europa) (08.06.2017)

Specialised remarks on the postage stamp Pofis No. 397 EUROPA 2007: 100 years of scouting.

80 years since the National Postage Stamp Exhibition Bratislava 1937 (13.11.2017)

1st part of the series of articles devoted to the 80th anniversary of the National Postage Stamp Exhibition Bratislava 1937 and the issue of the exhibition souvenir sheet

National Postage Stamp Exhibition Bratislava 1937 - Exhibition souvenir sheet (13.05.2018)

2nd part of the series of articles devoted to the 80th anniversary of the National Postage Stamp Exhibition Bratislava 1937 and the issue of the exhibition souvenir sheet

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Measurement of perforation of postage stamps (02.02.2019)

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.

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Slovak self-adhesive postage stamps separated by cutting (01.05.2020)

Overview of Slovak self-adhesive postage stamps separated by cutting and types of cutting.

Distance measurement method on postage stamps (and not only on postage stamps) (29.04.2020)

Method of measuring distances in distinguishing printing plates used for printing by offset and recess printing from flat bed echniques.

Production errors on the Slovak postage stamp Philately (29.06.2020)

An overview of found production errors on the Slovak postage stamp Philately.

The complex story of the joint issue Environmental Sustainability ACT NOW during the coronavirus pandemic COVID-19 (28.01.2022)

Monitoring the story of the planned joint release Environmental Sustainability of ACT NOW negatively affected by the COVID-19 coronavirus pandemic.

Additional information on the London souvenir sheet 1943 (09.02.2021)

Article devoted to additional information on the "London Souvenir Sheet" issued on the occasion of the "Exhibition of Czechoslovak Stamps in London" in 1943.

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