October 2, 2026 · Pres. 190°
Presentation no. 190 — Introduction, II, IV and XII
Monthly update of 2 October 2026: corrections and new pages in four index volumes, per the PDF historial.
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Gz Catalogue
Catalogue of Argentine postage stamps
A study and reference tool for those who collect and research Argentine stamps: series, papers, perforations, valuations and studies gathered in one place and numbered with the Gz system.
- 1.900+ Catalogued series
- 18.500+ Philatelic records
- 9.700+ Catalogued images
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Behind the catalogue
The history of the Gz Catalogue, its researchers and a tribute to those who sustain this collective work.
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Latest updates
Documented progress in the Introduction volume historial. When a sheet is linked, the image is from that series in the catalogue.
August 7, 2026 · Pres. 188°
Volume II — types of Gz 558 (5c J. M. Estrada)
Presentation no. 188 documents work on the types of the Estrada Centenary series (1942).
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August 7, 2026 · Pres. 188°
Volume I — Kidd series, Belgrano positions
The same presentation no. 188 confirms positions in the pilot Kidd series, including the Belgrano value.
View sheet →January 3, 2025 · Pres. 169°
New Volume M — postmark catalogue
Presentation no. 169 welcomes Volume M and progress by the postmark subgroup in the general index.
Philatelic library
Studies and guides to understand each stamp beyond its number. Some sections are in preparation.
DossiersStudies devoted to one specific series: history, design, printing and varieties.20 Available
PapersPaper types used in the issues and how to recognise them.In preparation
WatermarksWatermarks: shapes, positions and how to read them against the light.In preparation
Technical guidesPerforations, printing systems and terminology. General guides, not tied to one series.In preparationProvisional portal illustrations.