Malaysia Stamp & Philately Reference Guide
FOUND : 6 GROUPS CURRENT PAGE : 1 TOTAL PAGE : 1

+ Issue Date     : 15/08/1966
+ Classification : Postage Due
+ Emission       : Definitive / General Issue
+ Printer        : Harrison & Sons, Limited
+ Printing       : Lithography
+ Paper          : Ordinary Paper
+ Watermark      : PTM (Upright)
+ Perforations   : 14½ x 14
+ Separations    : Normal Perforations
+ Gum Type       : Gum
+ Shape          : Rectangular
+ Orientation    : Vertical

+ Issue Date     : 23/05/1972
+ Classification : Postage Due
+ Emission       : Definitive / General Issue
+ Printer        : Harrison & Sons, Limited
+ Printing       : Lithography
+ Watermark      : PTM (Sideways)
+ Perforations   : 14½ x 14
+ Separations    : Normal Perforations
+ Gum Type       : Gum
+ Shape          : Rectangular
+ Orientation    : Vertical

+ Issue Date     : 1980
+ Classification : Postage Due
+ Emission       : Definitive / General Issue
+ Printer        : Harrison & Sons, Limited
+ Printing       : Lithography
+ Watermark      : Unwatermarked
+ Perforations   : 14½ x 14
+ Separations    : Normal Perforations
+ Gum Type       : Gum
+ Shape          : Rectangular
+ Orientation    : Vertical

+ Issue Date     : 15/09/1986
+ Classification : Postage Due
+ Emission       : Definitive / General Issue
+ Designer       : Kathy Wong
+ Printer        : Percetakan Keselamatan Nasional Sdn Bhd
+ Printing       : Lithography
+ Watermark      : Unwatermarked
+ Perforations   : 12 x 11½
+ Separations    : Normal Perforations
+ Gum Type       : Gum
+ Shape          : Rectangular
+ Orientation    : Vertical
Original prints were on thin and shiny paper with sticky gum (it leaves noticeable fingerprint marks upon touching).

50¢ and $1 reprints in 1999 show similar plate number as the earliest print: 1A. However, the following year printing shows the year along with plate number.

Earliest recorded plate number for 50¢ is 2005/01. Before this 2005/1 50¢ reprint (variety), there is at least one more reprint (variety) - the paper is rough at the back of the stamp and the gum is not as the original print of sticky gum.

For $1, it is believe that there is at least one reprint - similar to the rough paper/gum as that of the 50¢ green reprint.

It is also suggested that 10¢ and 20¢ have also the rough paper/gum reprint.

Only 5¢ is known without any reprint.
 
  Plate Number Watermark Gum Notes
1A1A Unwatermarked Sticky Original Print
10¢ 1A1A Unwatermarked Sticky Original Print
1A1A Unwatermarked Smooth  
2004/01 SPM Creamy  
2004/02 SPM Creamy  
20¢ 1A1A Unwatermarked Sticky Original Print
1A1A Unwatermarked Smooth  
1A1A SPM Creamy  
2004/01 SPM Creamy  
2004/02 SPM Creamy  
unknown SPM Inverted Creamy  
50¢ 1A1A Unwatermarked Sticky Original Print
1A1A Unwatermarked Rough  
2005/01 Unwatermarked White  
$1 1A1A Unwatermarked Sticky Original Print
1A1A Unwatermarked Rough  

Original Print : Thin shiny paper, sticky gum.
Smooth : White smooth gum on thin paper but not as sticky as 'sticky gum'.
Rough : First reprint, thin paper but rough texture at the back and gum no longer sticky.
Creamy : Greenish and thick paper with cream colour gum.

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

+ 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/

+ Issue Date     : 2012
+ Classification : Postage Due
+ Emission       : Definitive / General Issue
+ Separations    : Normal Perforations
+ Gum Type       : Gum
+ Shape          : Rectangular
+ Orientation    : Vertical