The unique ink is based on a secret formula developed by KGB scientists during the Cold War period, and has been recently adapted into a modern gel pen format. This is the genuine disappearing "spy ink" pen - don't confuse it with the fabric marking pens (usually having purple ink and a felt-pen tip) or novelty pens that others sell as disappearing spy ink pens.
WARNING: Do not use on any legal document or financial instrument.
30 Days Manufacturer Defect Warranty
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