The photograph illustrates the overseas philatelic products on sale as from Thursday (September 14). They include "Modern Architecture" Stamp Set of 6 (picture 1) issued by Royal Mail, "World Heritage - France" Stamp Set of 6 (picture 2) issued by United Nations, "DC Comics Super Heroes" Souvenir Sheet with 1 Set of 20 Self-adhesive Stamps (picture 3) issued by USPS and "XXI China Adolescents Science and Technology Invention Contest" Stamp Sheetlet (picture 4) issued by Macao Post.