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Stamps printed in excessive quantities
According to an article in the Philatelic Webmaster Organization, some companies that have printed stamps on behalf of poor countries (especially in Africa) are printed in excessive quantities aimed at collecting.
Stamps are only apparently approved by local postal administrations,
The article mentions in particular
many stamps and leaflets related to minerals, from countries such as Chad, Comoros, Mali, Niger, Congo ,
Burundi, Guinea Rep., Guiné Bissau Rep.,
Solomon Is., S.Tome & Prince, Togolaise Rep.....
Therefore since December 2015 no longer updated images of stamps of the these country.
They are printed without glue and high prices.
*****
Black number = Scott catalog
Blue or red number = Yvert et Tellier catalog
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Minerals
Meteorites
Image |
Country |
Year |
Subject |
Yvert |
Set |
 |
Guinè-Bissau |
2021 |
Various meteorites |
n.c. |
3 val |
 |
Guinè-Bissau |
2021 |
Meteorite Campo del Cielo |
BF |
1 val |
 |
Guinè-Bissau |
2021 |
Siderite |
BF |
1 val |
 |
Guinè-Bissau |
2021 |
Meteorite Canon Diablo |
BF |
1 val |
Gems and Jewels
Image |
Country |
Year |
Subject |
Yvert |
Set |
 |
China Rep. Pop. |
2017 |
Carving Jade |
5425 |
5425-5427 |
 |
Liberia |
2020 |
Ruby rough |
6194 |
6193-6198 |
 |
Liberia |
2020 |
Sapphire Rough |
6196 |
" |
FDC and Postcard
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