As Scout stamp collectors, we often see on stamps relating to Girl Guides or Girl Scouts a World Trefoil.  This is the symbol of the World Association of Girl Guides and Girl Scouts (WAGGGS).  The first stamps to include it were those issued in Belgium and the Philippines in 1957.

The colors are a golden trefoil representing the sun in the blue sky, shining on all the children of the world.  The three leaves of the trefoil depict the three-fold Promise.

On my honor, I promise that I will do my best:
1. To do my duty to God and the Queen/my country;
2. To help other people at all times;
3. To obey/live by the Guide/Girl Scout Law.

The two stars symbolize the Promise and the Law.  The center vein pointing upwards stands for the compass needle always showing the way.  The base of the trefoil is shaped like the heraldic "feu" and illustrates the flame of love of mankind.

Any unit whose National organization is a member of WAGGGS may carry or fly a World Flag and display the Trefoil.

SOSSI Journal, Volume 40, Number 5, June 1991
Updates and Modifications by Keith Larson