Secret Agent Invisible Ink Pen - House of Marbles US

House of Marbles US Secret Agent Invisible Ink Pen | From the ridiculous to the sublime, we have been manufacturing our unusual range of traditional games, puzzles, toys, marbles and glassware for many years.

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Invisible Ink Spy Pen

Part of our range of inconspicuous Secret Agent Spy products., This clever spy pen lets you write secret messages only revealed by the built in U.V.

Secret Agent Invisible Ink Pen

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