The 1st print issue was made by Thai British Security Printing and can be recognized by the pictogram of the printer top left and 1 x SALA on the left edge of the sheet margin.
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The 2nd print issue was made by Chan Wanich Security Printing and can be recognized by the pictogram of the printer on the top left and 2 x SALA on the left edge of the sheet margin.
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The 3rd print issue was made by Australia Post, Sprintpak and has a color point instead of the pictogram of the printer upper left and 3 x SALA on the left edge of the sheet margin.
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The 4th print issue was made by Thai British Security Printing and can be recognized by the pictogram of the printer top left and 4 x SALA on the left edge of the sheet margin.
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The 5th print issue was made by Thai British Security Printing and can be recognized by the pictogram of the printer top left and 5 x SALA on the left edge of the sheet margin.
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| In addition, all print´s differ due to the perforation "A", "C", "D" and "E", slight color differences in color and the type of font in the Sheet Digit Numbers. |
| The stamp sheets are also to be recognized by the impression of the printer below the stamps´s 17 and 18. |
| Unlike the last series of definitive stamps, no abnormalities in counting numbers, etc. are currently known |
