The
1-Malaysia stamps issued on August 31, 2009 come in two sources - stampsheet (three types) and booklet (five types). The stamps have one elliptical perforation on vertical sides. The stamps from stampsheet and booklet have different perforations. The perforation for stamps from stampsheet is P13.75x14.25 while from booklet is P13.75x13.5. Apart from that, the watermark is also different between the stamps from stampsheet (SPM sideway) and booklet (SPM upright and SPM inverted). Therefore, the stamps from stampsheet and booklet are basically different stamps in the eyes of serious stamp collectors.
Well, the perforation varieties do not just stop there. Eventhough the perforation of the stamps from booklet is P13.75x13.5, and there are still two different formats of vertical perforation for these booklet stamps. You will observe the presence of an elliptical pinhole at the vertical side of the stamp. So, the vertical pinhole divides the ordinary small pinholes into two parts (upper and lower). If one tries to count the number of these small ordinary pinholes, one will notice that some stamps have 9-upper-10-lower small pinholes and other stamps have 10-upper-9-lower small pinholes. So, these booklet stamps have two different perforation formats (but with same perforation size).
stamp from stampsheet with perforation P13.75x14.25; perforation format is 10-upper-10-lower small pinholes
stamp from booklet with perforation P13.75x13.5; perforation format is 9-upper-10-lower small pinholes
stamp from booklet with perforation P13.75x13.5; perforation format is 10-upper-9-lower small pinholes
side by side comparison of the above three stamps following the sequence of the above stamps
