+ Issue Date     : 1999
+ Classification : Postage Due
+ Emission       : Definitive / General Issue
+ Designer       : Kathy Wong
+ Printer        : Percetakan Keselamatan Nasional Sdn Bhd
+ Printing       : Lithography
+ Watermark      : SPM
+ Perforations   : 12½ x 11½
+ Separations    : Normal Perforations
+ Gum Type       : Gum
+ Shape          : Rectangular
+ Orientation    : Vertical

10¢ and 20¢ reprints in 1999 show similar plate number as the earliest print: 1A. However, since 2004, plate number with printed year on it has been issued.

Reprints in 2004 show duller duller and thicker paper than that in 1999.

Credits
Ian Choong of Ian's Collection http://kajang-stamps.blogspot.com/