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1st PRINT TBSP
The 1st PRINT of the 1 BAHT stamp was produced by Thai British Security Printing and can be identified
by the printer's pictogram in the top left
and 1 x SALA
on the left edge of the stamp sheet.
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There are different identifying features for the Thai Sala issues and print runs:
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(14:14¼ 2017/20), (14:14½ 2021), (13¼ 2018), (14:14½ 2021), (14¼:14½ 2023), (13¼ 2023), (14 2021)
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Slight color differences and different fonts in the sheet numbers.
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Microprint in the lower right cornice.
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The printers can be identified by the printer's imprint below stamps 17-18.