The miniature sheet of
palm tree issue (released on May 19, 2009) has a L-shape stamp. The process of perforating on the L-shape stamp in the miniature sheet could be a tedious job, and this could create flaw (perforation shift). Below is one of the examples of perforation shift for the L-shape stamp. I strongly believe that some of you might possess even more "serious" perforation shift for this miniature sheet.
the front view of the miniature sheetthe back view of the miniature sheet