Pos Malaysia released a set of national definitive stamps with images of unique marine life on 18 June 2020 with denominations RM1.30, RM1.40, RM1.50, RM1.70 and RM1.90. These denominations are of use for domestic commercial mail. The stamps are printed in a format of 20-stamp sheet (original print) by Southern Colour Print, New Zealand. One the very same day the reprints of these stamps were also available at some post offices. The reprints were printed in a format of 100-stamp sheet by Percetakan Keselamatan Nasional, Malaysia.
top: original print; bottom: reprint
The original stamps and the reprints are different in many ways - watermark, size, perforation, micro-printing, colour shade and gum type.
Original Stamps
size: 28mm x 32mm (larger)
perforation: P13.5x13
watermark: no wmk
micro-printing: no micro-printing
colour shade: blue colour is dull
gum type: white gum
Reprints
size: 27mm x 32mm (smaller)
perforation: P14x13.75
watermark: SPM wmk
micro-printing: with micro-printing
colour shade: blue colour is brighter
gum type: creamy gum
Showing below is the comparison of original stamps (top) and reprints (bottom) for the five denominations on the aspects of size and micro-printing