Differences Singapore 1985
From the 1985 Singapore series we know two stamps: values 10 honey bee Apis cerana javana and 20 carpenter bee Xytocopa caerulea.
The first printing of this series was made by the Japan Printing Bureau,
The reprint was made by Leigh Mardon. This gives us different papers: the
paper used by the Japan Printing Bureau is thicker. There are also other
by Jan de Crom
taken from "The Postal Bee" 1/2002
Contact Group Bee Philately