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Cantagalo, São Tomé and Príncipe

Last modified: 2026-06-13 by ian macdonald
Keywords: cantagalo | sao tome e principe |
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ST PR flag image by António Martins-Tuválkin, 27 May 2026

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About the flag

A vertical tricolor of yellow-white-green with a seal on the middle is shown as one of the 9 sister city/town symbols of Santo Tirso, Portugal (https://www.cm-stirso.pt/servicos/areas-de-intervencao/cultura-desporto-e-comunidade/cultura/geminacoes/cantagalo). It is a grainy image, seemingly scanned from hardcopy: https://www.cm-stirso.pt.
The depicted flag is roughly 2:3; the green panel seems to be wider, but that's likely a cropping artifact. The seal-like emblem on the center is horizontally oblong, not a perfect circular disc, suggesting this might be a distorted rendering of an even more squarish original. Its design is very simple, with two concentric rings surrounding the initialism "C.D.C." and on the rim the (mismatching) inscription "Câmara Municipal de Cantagalo", all in black on white.

António Martins-Tuválkin, 29 April 2026

Presuming that the image referred to above was distorted and that the original features indeed a round seal yields an overall ratio of 12:13 – presuming also that extra padding was not added to the top and bottom to approximate a square: It may very well be that the actual flag is more unexceptionally ~2:3 oveall with a circular seal.
The unequal stripes are so only marginally, at around 38+41+38.
I presume that "C.D.C." stands for Cāmara Distrital de Cantagalo, by analogy.

António Martins-Tuválkin, 27 May 2026