Issued under French Occupation:
- 101-15. Franco-English occupation issue of 1915. Three forged overprints. German Philatelic Society Reference Manual of Forgeries, Vol. 10 “German Colonies”(Cameroon French Occupation, 1915).
- 130-46. 25c and higher values of the French occupation issue, 1916-17. Measurement of overprint on Type A2: Scott Dudley Cobb, “Forged Cameroun Francais Overprints”, Journal of the France & Colonies Philatelic Society,Vol. 57, (March 2007): 11; Scott Classic Specialized Catalog.
- 255 (Yvert & Tellier 208a). 2c “Cameroun Francais” overprint (in black), 1940. Forged trial overprint: Dudley Cobb, “Forged Cameroun Francais Overprints”, Journal of the France & Colonies Philatelic Society,Vol. 57, (March 2007): 11.
- B10-B13. Free French army issue of 1940. Forged surcharge. Robson Lowe (editor), The Gee-Ma Forgeries, p.11.
- B14, B15. Free French army issue of 1941. Forged surcharge. Robson Lowe (editor), The Gee-Ma Forgeries, p.11.
- Genuine French occupation postmarks. M.P. Bratzel, Jr., “Flyspecking The Early Postmarks of French Cameroun”, The France and Colonies Philatelist (U.S.), Vol. 48 (January 1992): 1-8.
- Genuine postmarks: M.P. Bratzel, Jr., “The 24mm Diameter, Double-Ring Postmarks of Douala, Cameroun”, The France and Colonies Philatelist (U.S.), Vol.44, Whole No. 211 (April 1988): 7-13 and Addenda, The France and Colonies Philatelist (U.S.), Vol.46 (January 1990): 16.
- Fraudulent postmark. M.P. Bratzel, Jr., “Doula, Cameroun – A Forged 1943 Postmark”, The France and Colonies Philatelist (U.S.), Vol.43, Whole No. 207 (April 1987): 56.
Source: The Tedesco Index
