No stamps were issued in 2005 by São Tomé and Príncipe. Therefore any stamp inscribed and/or portrayed as being issued in 2005 is a counterfeit illegal stamp.
This item was illegally produced by Mayfair International Security Printers located in France and distributed through the so-called philatelic agency called "Marino-Montero International" and are distributed by associated British, German, U.S., Belgium and other Eastern European based illegal stamp dealers. Avoid Sellers of these!