The photograph illustrates the overseas philatelic products to be put on sale from May 3. They include "International Polar Year 2007-2008" Souvenir Sheet (picture 1) issued by Canada Post, "Shek Wan Ceramic" Stamps (set of 4) (picture 2) issued by Macao Post and "Sea Life" Stamps (set of 10) (picture 3) issued by Royal Mail.