Congo was an independent state, founded by
Leopold II of Belgium, until 1908 when it was annexed to Belgium as a colony.
Stamps from the Independent State
Leopold II in profile, 1886, no’s 1-5
Design: H.Hendrick
Engraving: A. Doms (Zegelfabriek te Mechelen)
Printer: “Atelier du Timbre” in Malines
Perforation: 15
Sheet: 3 sheets of 50
Circulation:
No.1 (5c), 120,000 stamps
No.2 (10c), 90,000 stamps
No.3 (25c), 60,000 stamps
No.4 (50c), 60,000 stamps
No.5 (5f), 4,800* stamps (including the
overprint Colis Postaux)
* According to Gallant/Huyghebaert this
number should be 4,900

Variations in light to darker are known for
the numbers 1, 2, 4 & 5.
No.5 a perforation: 14 and 15 exist.
Varieties in COB:
1-V 5c
A in Etat and first O in Congo is broken (stamp no 40 in the sheet)
2-V 10c
the outer line in the right top corner is broken. (Position no 50 in the sheet)

3-V 25c
misshaped U in the word DU. (Stamp no 30 in the sheet)
4-V 50c
Cungo instead of Congo. (Stamp no 5 in the sheet)

5-V the
N is extended in the word IND (left top of stamp) (Stamp no 38 in the sheet)
Curiosity:
2-CU 10c
vertically lined
Several varieties are not listed in the COB
Here an example of tonsure (a white spot in
the hair)

No.5 Non perforated:

Forgeries and unauthorized impressions:
I would like to limit myself to a few
examples with a meager explanation. I shall refer to various publications,
which have appeared on this subject. There are three ‘famous’ Belgium Congo
forgers (although they were not restricted to Belgium Congo only).
Fournier, François (1846-1917):
Fournier forgeries are among the most famous items in the stamp world. François
Fournier (1846-1917) produced large amounts of false postage stamps between
1900 and 1914. To avoid prosecution for forging legal and valid stamps,
Fournier concentrated on reproducing obsolete stamp issues for sale by
tobbanocists, book dealers and stationers. He issued a catalogue and pricelist
of facsimiles, which contained over 3600 entries. From 1910 to 1913 Fournier
published a journal Le Fac-Simile where he discussed these issues. He
saw himself as a producer of stamps for those who could or would not afford the
real item. His assistant Karl Hirschburger, carried on the business for a
while, but without much success. In 1928, after his the death of Fournier's
assistant Hirschburger the entire stock of equipment and forged stamps was
bought by the Philatelic Union of Geneva. This material was made up into books,
arranged by the countries whose material was forged, which subsequently issued
480 albums of Fournier’s stamps for reference purposes, each stamp overprinted
"Faux" or "Facsimile".

Lenoir:
Lenoir was a retired police commandant who,
after 1918, printed stamps with the original engraved plates. (More info on the
person Lenoir would by highly appreciated).
The Lenoir reprints were originally
produced in un-gummed, imperforate sheets of ten*. Many were later gummed and
perforated with a line perforator or by hand and easily distinguishable from
the Harrow machine were which the original perforation is done.
* Sheets are known for the COB numbers 1-5,
and 9-13B.

Sperati, Jean (1884-1957): Sperati began his career in stamp fakery at an early age in the city
of Pisa. By the time he was 26 years of age, the business, now a family enterprise,
was well underway and thriving. At this time, around 1910, his first fake
quietly appeared at a Berlin auction. The unsuspecting victim at that sale was
Dr. Heinrich Koehler, a leading German dealer whose highly respected firm still
flourishes today. By 1954, at the age of 70 and with failing eyesight he was
made an offer he couldn't refuse. The British Philatelic Association (BPA) -
anxious to stop Sperati for good - simply bought him out!
SEE: http://www.gnomevillage.com/gnews/StampNews/Sperati.asp
Bibliography:
Balasse,
Willy
Grand Catalogue special illustré des Timbres de Belgique et du Congo Belge,
1940.
Balasse, Willy
Catalogue des Timbres de Belgique et du Congo Belge, tomes I/III, 1949
Cowman,
A.R.
Describes
two forgeries of the 5fr. Philatelic Magazine, 8 August 1925.
De
Haene, A.
Etudes sur
les Faux Timbres d’Europe. 1926.
Denuemoistier,
Eliane
Etat Indépendant du Congo – Le 5 centimes de 1886, Collection “Groupe d’étude
des falsifications”.
Denuemoistier, Eliane
Etat Indépendant du Congo – Les 10-25 & 50 centimes de 1886, Collection
“Groupe d’étude des falsifications”.
Denuemoistier, Eliane
Etat Indépendant du Congo – Le 5 fr. 1886, Collection “Groupe d’étude des
falsifications”.
Stein,
G.
Faux et falsifications Belgique – Congo, no date.
Vervisch,
Roger
“N°5 - Le 5 Fr. authentique, faux le plus répandu, faux Fournier Types 1 et 2”,
in Balasse Magazine, n° 258:231-234.
Widdershoven,
M.G.
Describes
and illustrates a forgery of the 5F, in La Revue Postale, February 1925.
See also (only in French):
http://users.skynet.be/chst/falsification.htm