Postage Due 1986

Malaysia postal authority issued a set of postage due stamps (five different denominations) on 15 September, 1986. These postage due stamps are still in use until now. All the postage due stamps were intially printed without watermark. Later on, however, the 10c and 20c reprints were printed with SPM-watermark (http://kajang-stamps.blogspot.com/2008/04/postage-due-plate-numbers.html).