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Penny Black Philately
Angola
![Angola flag](https://www.images.johnvincent.io/countries/flags/4x3/ao.svg)
Australia
![Australia flag](https://www.images.johnvincent.io/countries/flags/4x3/au.svg)
Austria
![Austria flag](https://www.images.johnvincent.io/countries/flags/4x3/at.svg)
Belgium
![Belgium flag](https://www.images.johnvincent.io/countries/flags/4x3/be.svg)
Belgian Congo
![Belgian Congo flag](https://www.images.johnvincent.io/countries/flags/4x3/be.svg)
Canada
![Canada flag](https://www.images.johnvincent.io/countries/flags/4x3/ca.svg)
Denmark
![Denmark flag](https://www.images.johnvincent.io/countries/flags/4x3/dk.svg)
DR Congo
![DR Congo flag](https://www.images.johnvincent.io/countries/flags/4x3/cd.svg)
France
![France flag](https://www.images.johnvincent.io/countries/flags/4x3/fr.svg)
Germany
![Germany flag](https://www.images.johnvincent.io/countries/flags/4x3/de.svg)
German Empire
![German Empire flag](https://www.images.johnvincent.io/countries/flags/4x3/de.svg)
Great Britain
![Great Britain flag](https://www.images.johnvincent.io/countries/flags/4x3/gb.svg)
Greece
![Greece flag](https://www.images.johnvincent.io/countries/flags/4x3/gr.svg)
Haiti
![Haiti flag](https://www.images.johnvincent.io/countries/flags/4x3/ht.svg)
Hungary
![Hungary flag](https://www.images.johnvincent.io/countries/flags/4x3/hu.svg)
Iceland
![Iceland flag](https://www.images.johnvincent.io/countries/flags/4x3/is.svg)
India
![India flag](https://www.images.johnvincent.io/countries/flags/4x3/in.svg)
Netherlands
![Netherlands flag](https://www.images.johnvincent.io/countries/flags/4x3/nl.svg)
Norway
![Norway flag](https://www.images.johnvincent.io/countries/flags/4x3/no.svg)
Paraguay
![Paraguay flag](https://www.images.johnvincent.io/countries/flags/4x3/py.svg)
Peru
![Peru flag](https://www.images.johnvincent.io/countries/flags/4x3/pe.svg)
Portugal
![Portugal flag](https://www.images.johnvincent.io/countries/flags/4x3/pt.svg)
Romania
![Romania flag](https://www.images.johnvincent.io/countries/flags/4x3/ro.svg)
Spain
![Spain flag](https://www.images.johnvincent.io/countries/flags/4x3/es.svg)
Sweden
![Sweden flag](https://www.images.johnvincent.io/countries/flags/4x3/se.svg)
Switzerland
![Switzerland flag](https://www.images.johnvincent.io/countries/flags/4x3/ch.svg)
Turkey
![Turkey flag](https://www.images.johnvincent.io/countries/flags/4x3/tr.svg)
United States
![United States flag](https://www.images.johnvincent.io/countries/flags/4x3/us.svg)