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Chad
Information regarding these stamps can be found on the counterfeit stamp page.
El Salvador
Scott number unknown
Mongolia
Scott number unknown
Papua New Guinea
Papua New Guinea is currently holding an art competition with the winning designs to appear on stamps for 2008's World AIDS Day.
Sao Tome and Principe (St. Thomas)
Scott number unknown
I have the sneaking suspicion these stamps may not be legal, but at present I have no evidence to support my hunch.
Go to: 2007