Gibbons have a very strange policy towards African (non-Commonwealth) stamps, and I have simply been unable to track these items down. Some items are unlisted by Gibbons but these stamps have all been GENUINELY COMMERCIALLY USED. They may be worth a small fortune. Or just the usual price. Without catalogues or further information it is difficult to tell! If you do have any info on any of these items please contact me on leysiner@aol.com