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Rare & Key Issues

1st Harley Quinn Comic: Batman Adventures #12 and What Grade Does

Published Oct 10, 2026 · Updated Oct 11, 2026 · 2 min read

Short answerHarley Quinn's first comic is The Batman Adventures #12, cover-dated September 1993 from DC Comics. It was printed in large numbers, so its price depends mostly on grade: 9.8 copies, newsstand copies and the scarcer second printing carry the premium.

The book

The Batman Adventures #12 is the first Harley Quinn comic. It carries a cover date of September 1993, and DC Comics published it as part of the series tied to Batman: The Animated Series. The story is by Kelley Puckett, with art by Mike Parobeck and Rick Burchett.

Harley was created by Paul Dini and Bruce Timm for the television episode "Joker's Favor", first broadcast in September 1992. That is why the comic is a first comic appearance and not her first appearance anywhere. The full story of the debut is in Batman Adventures #12 explained and What is the first appearance of Harley Quinn?.

Why the price depends on grade

The issue is a standard Modern Age key and the most valuable comic of the 1990s after New Mutants #98. But it was printed in large numbers. Raw and low-to-mid-grade copies are not scarce, so the premium gathers in three places:

  • 9.8 copies. A near-perfect copy is the grade the market pays most for on a high-print-run book.
  • Newsstand copies. These were sold through newsstands and carry a different cover marking from direct-market copies. Newsstand copies are scarcer in high grade.
  • The second printing. It is scarcer than the first printing, and it is a separate book to a buyer. Check which printing a copy is before comparing prices.

What CGC and CBCS look at

CGC and CBCS are third-party grading companies. Both grade on a 0.5 to 10.0 scale and seal the book in a tamper-evident holder. A 9.8 on this issue is tough to earn, so details matter when you look at a raw copy:

  • Spine. Stress lines, color-breaking creases and tiny ticks on the spine are the most common reasons a copy misses 9.8.
  • Corners and edges. Blunting, bumps and chipping along the edges, especially on the cover's dark areas.
  • Cover surface. Gloss, scuffing and print blemishes. Light fingerprints and wear show on glossy 1990s covers.
  • Staples and pages. Rust, tears at the staples and page quality all feed into the grade.

A copy that looks clean at a glance can still come back as a 9.4 or 9.6. If a copy has defects, pressing may help before submission, but results are never guaranteed. See CGC & CBCS grading submission if you want a raw copy graded, or collection appraisal and valuation if you have several books and want an opinion first.

How to check a price

No single figure applies to the issue, because grade, printing, newsstand versus direct edition and label type each move it. Look at recent sold prices from auction houses and marketplaces for the same grade, the same printing and the same edition. Asking prices are not sales.

Other Harley Quinn books

Several later issues are also collected, including Harley Quinn #0, #1, #28 and #75. Copies currently listed:

Browse the full Harley Quinn page, all graded comics for sale or the collector guides.

Frequently asked

What is the first Harley Quinn comic?
The Batman Adventures #12, cover-dated September 1993 and published by DC Comics. It is a tie-in to Batman: The Animated Series.
What is the Harley Quinn release date in comics versus TV?
She debuted on television in the Batman: The Animated Series episode 'Joker's Favor' in September 1992. Her first comic appearance, in The Batman Adventures #12, is cover-dated September 1993, a year later.
Why does a 9.8 matter so much for Batman Adventures #12?
The issue was printed in large numbers, so mid-grade copies are plentiful. The value sits almost entirely in 9.8 copies, newsstand copies and the scarcer second printing.
Who created Harley Quinn?
Paul Dini and Bruce Timm created her for the television episode 'Joker's Favor'. The comic issue itself was by Kelley Puckett, Mike Parobeck and Rick Burchett.

Drafted with AI assistance from the facts and keywords the Rare Comics Collectors team maintains, then put through an automated fact check and our editorial rules. Spotted an error or have a question this guide does not answer? Tell us.

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The Batman Adventures #19 (DC Comics, 1994), raw, ungraded comic book — front cover
DCRaw

The Batman Adventures

#19 · 1994

Not graded
Last copy

DC Comics · Modern Age

The Batman Adventures #19

Raw · Not graded

(0)
$3
The Batman Adventures #17 (DC Comics), CGC 9.8 graded comic book, Universal Blue label — front cover in its holder
DCCGC

The Batman Adventures

#17

9.8
Key issueLast copy

DC Comics

The Batman Adventures #17

CGC 9.8 · Universal Blue

(0)
$224.99
The Batman Adventures #12 (DC Comics, 1993), raw comic book in VF- 7.5 condition — front cover
DCRaw

The Batman Adventures

#12 · 1993

7.5
Key issueLast copy

DC Comics · Modern Age

The Batman Adventures #12

Raw · VF- 7.5

(0)
$367.79
  • Key issues

    Batman Adventures #12 explained: Harley Quinn's first comic appearance

    The Batman Adventures #12 (September 1993) is Harley Quinn's first appearance in comics, a year after her television debut in Batman: The Animated Series. It is the most valuable comic of the 1990s after New Mutants #98 and a standard Modern Age key. Because it was printed in large numbers, the value sits almost entirely in 9.8 copies, newsstand copies and the scarcer second printing.

    Updated Oct 11, 2026

  • Characters

    What is the first appearance of Harley Quinn?

    Harley Quinn's first comic-book appearance is The Batman Adventures #12, cover-dated September 1993, by Kelley Puckett, Mike Parobeck and Rick Burchett, in the tie-in series to Batman: The Animated Series. She was created by Paul Dini and Bruce Timm for the television episode “Joker's Favor”, first broadcast in September 1992, a year before she reached print.

    Updated Oct 11, 2026

  • Grading

    What is a CGC graded comic?

    A CGC graded comic is a comic book that Certified Guaranty Company (CGC) has examined, assigned a numeric grade from 0.5 to 10.0, and sealed in a tamper-evident plastic holder with a label that records the grade, the page quality and any restoration. The holder and label let a buyer trust the condition without opening the book.

    Updated Oct 11, 2026

  • Grading

    How are comics graded? The 10-point scale explained

    Comics are graded on a 10-point scale that runs from 0.5 (Poor) to 10.0 (Gem Mint), with 25 steps in between. Graders assess the book's structure, surface, spine, corners, page quality and completeness, then assign the highest grade the worst significant defect allows. CGC and CBCS both use this scale, which comes from the Overstreet grading standard.

    Updated Oct 11, 2026

  • Grading

    CGC vs CBCS: what is the difference?

    CGC (founded 2000) and CBCS (founded 2014) are the two main third-party comic grading companies in the United States. Both grade on the same 10-point scale and encapsulate books in tamper-evident holders. CGC has the larger census and the deeper resale market, so its slabs often carry a modest premium; CBCS is known for its signature verification, which authenticates signatures after the fact rather than requiring a witness.

    Updated Oct 11, 2026

  • Grading

    What do CGC label colours mean?

    The colour of a CGC label tells you what kind of grade you are looking at before you read a word: blue (Universal) means an unrestored book graded on its own merits, yellow (Signature Series) means a signature witnessed by CGC, purple (Restored) means the book has been repaired or altered, and green (Qualified) means one significant defect has been set aside from the grade.

    Updated Oct 10, 2026