No. 4 - stamp and souvenir sheet issued in 1997 for the 50th anniversary of the Stamp & Philatelic Division

No. 5 - souvenir sheet issued in 1999 for the 25th anniversary of the International Philippine Philatelic Society
(IPPS) and stamps issued in 2000 for the 50th anniversary of the APO Philatelic Society

No. 6 - souvenir sheets issued in 2001 for the 50th anniversary of the Philippine Chinese Philatelic Society (PCPS)

The "FILIPINAS 2004" Stamp Exhibition, which will be held at the SM Megatrade Hall, 5th Floor, SM Megamall in Mandaluyong City, celebrates the 150th anniversary of the first Philippine postage stamps. The 3-day show, from January 30 to February 1, 2004, will showcase Philippine stamp issues since 1854. The exhibits will show Philippine stamps from the very first set issued during the Spanish regime through the U.S. Administration, Aguinaldo revolutionary period, Japanese Occupation up the present Republic issues.

The 6 exhibition souvenir sheets highlight Republic issues related to Philippine philately. The bottom margin (below the stamp) of each souvenir sheet features some designs from earlier topical issues. The 3 souvenir sheets and official first day covers will be available starting on their respective first day of issue at the
Philatelic Service, Door 203, Liwasang Bonifacio, 1000 Manila, the exhibition site in SM Megamall, Mandaluyong City, and all regional offices of the Philippine Postal Corporation.