Number by catalogue:  Yvert: A116   Scott: 1351  

Perforation type: 14x14

Subject:

Value of the international airmail postcard = 3.65 rand at the moment of release of stamps.

The schematical image of a typhoon and wind turbines.

Topics: Wind turbines

Number by catalogue:  Yvert: 1365  

Perforation type: 14x14 ¼

Subject:

Value of the standard postage paid = 1.77 rand at the moment of release of stamps.

The schematical image of a big wave and water energy

Topics: Hydroelectricity Various