Thailand - Fluorescent Marking

Flourescent mark has been used as a security measure for printing of stamps for many countries. A paper money detector (ultra violet light) will be enough to view these spectacular markings on stamps.

Thai Post uses fluorescent marking on her frama stamps/labels. The marking is logo of Thai Post. Showing below are two different fluorescent markings on these frama stamps/labels.

one big Thai Post logo appears on the stamp/label under uv light


two small Post logos appear on the stamp/label under uv light