Petronas Twin Tower - Plate Numbers

The Petronas Twin Towers stamps were released on 30 August 1999. I wrote about it some time ago (http://kajang-stamps.blogspot.com/2007/10/petronas-twin-towers.html). The stamps were printed in sheetlet of 50. All the four corners of the sheetlet were printed with plate number. One interesting thing on this issue is that different plate numbers have been recorded. The 30 sen has plate number 1A only; the 50 sen has plate numbers 1A and 1B; and the RM 1 has plate numbers 1A, 1B and 1C.