1999 presentation folder with three commemorative covers for the 1999 World Philatelic Exhibition (PRC 1999-4, Scott 2956) with award seals in gold, silver and bronze (4 images)

1999 presentation folder with three commemorative covers for the 1999 World Philatelic Exhibition (PRC 1999-4, Scott 2956) with award seals in gold, silver and bronze (4 images)