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| 2006 | 2007 | 2008 |
Macedonia
Scott RA105
Malaysia
Scott 699-701
Mali
Scott number unknown
Besides being on a small souvenir sheet (shown), this stamp was also released as a set of four with Einstein, Mandela, and Fleming (the inventor of penicillin).
Oddly, the Scott Guide does not list this stamp as if it never existed. It doesn't seem like the sort of stamp that would be counterfeited, but perhaps it was an illegal issue. I will submit this stamp to Scott and see if I can get an answer out of them.
Romania
Scott 4310
Serbia
Scott number unassigned
This stamp was an obligatory postal tax stamp used between June 1 and July 30. This stamp was printed in large sheets, in which the 94th stamp had a minor printing error on the left side of the left heart (I've seen a pic and it's really not very impressive). As a result the stamp was reprinted on a different paper. So technically there are two version of this stamp depending on the paper used. That's more of a distinction than most collectors of this stamp will need to know, so either stamp will probably do for your collection.
It should also be notied that although Serbia was part of the Federal Republic of Yugoslovia in 1999, it was semi-autonomous and released a number of its own stamps. Hence why this stamp says Serbia on it.
South Africa
Scott 1107-8
Zambia
Scott 812-3
