The cover has 4 different stamps.
The 1st stamp is a definitive stamp issued last 1997 showing a double decker bus.
The 2nd stamp is a part of National Monuments set with 6 stamps issued this year. It shows the Hwa Chong Institution Clock Tower.
The 3rd stamp is a part of Singapore - Indonesia Joint Issue set of 2009. It shows the Taman Mini Indonesia Indah, which means "Beautiful Indonesia Miniature Park"
The 4th stamp is a parrt of Singapore Youth Olympic Games set issued this Year. This is the first ever Youth Olympic Games.
The stamps inside are:
1. Military Planes of Singapore miniature sheet issued last 2003.
2. Civil Aviation of Singapore miniature sheet issued last 2003
3. Undersea World miniature sheet issued last 2006.
4. Set of stamps
a. 40 years of Singapore Air Force issued last 2008, 5 stamps in a set
b. Singapore Changi Airport Terminal 3 issued last 2008, 4 stamps in a set
c. Nature Series issued last 2007, 4 stamps showing fishes