Select a year
Scott number unknown
This stamp is available as both an imperforated stamp by itself on a sheet, and a perforated sheet. The imperforated sheets are supposed to be a limited printing, but are available so commonly on the Internet that I have my suspicions that many of them may be counterfeit.
According to a letter I received from the folks at the Scott Catalog in August 2012, they have not given this a catalog number yet because they have not been able to examine the perforated stamp from the sheet. The imperforated version is not of interest to them and will not receive a number.
Yugoslavia, Federal Republic of
No Scott number
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. Because the stamp was only used in the region of Serbia rather than nationwide, it is not eligible for a Scott catalog number.