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Leonardo comics

Graded books and collector guides featuring Leonardo.

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Leonardo guides

First appearance, key issues and what drives the prices.

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  • Collecting

    TMNT Debut: Teenage Mutant Ninja Turtles #1 (1984), First Appearance

    The TMNT debut is Teenage Mutant Ninja Turtles #1, published by Mirage Studios in May 1984, which introduced the four Turtles. Only the first printing, of about 3,000 copies, is the high-value key; later printings look similar but carry the printing in the indicia.

    Updated Oct 11, 2026