The 1961 Supergirl Key Poised to Explode This Summer
With James Gunn’s Supergirl film landing this June, there’s one Silver Age book that’s already a key but has the potential to ignite right before, during, or immediately after the movie hits theaters. Why? Because if there’s one thing we’ve learned about James Gunn, it’s that he loves pulling deep‑cut characters out of the shadows and turning them into household names. And this particular issue doesn’t just feature one first appearance—it houses six of them in a single Supergirl comic.
Released in 1961, Action Comics #276 comes from the creative team of writer Jerry Siegel—yes, the co‑creator of Superman himself—and artist Jim Mooney, one of the defining Supergirl illustrators of the era. Together, they introduced a wave of Legion of Super‑Heroes characters who would go on to shape DC lore for decades.
The 1961 Supergirl Key Poised to Explode This Summer
From a census standpoint, the book is no ghost, but it’s far from over‑saturated. 330 CGC‑graded copies exist, with 10 copies at 9.0, and only four copies total between 9.2 and 9.6. And here’s the kicker—there are zero 9.8s. That alone makes the hunt exciting. A recent 6.0 sold for $399, so imagine the upside if someone eventually lands that elusive 9.8. Even without movie speculation, that would be a monster accomplishment.
Now let’s talk characters. If Gunn taps any of these first‑appearance Legionnaires—Phantom Girl, Triplicate Girl, Shrinking Violet, Bouncing Boy, Brainiac 5, or Sun Boy—and they resonate with audiences the way Peacemaker or Rocket Raccoon did, this book instantly becomes one of the smartest Silver Age plays of the year.
So here’s the recap: A 1961 Jerry Siegel/Jim Mooney Supergirl issue. Six first appearances. A movie on the horizon from a director known for spotlighting the unexpected. A census with no 9.8 in existence. And a price range that still leaves room for real upside.
The 1961 Supergirl Key Poised to Explode This Summer
If you secure a high‑grade copy—especially the first 9.8 ever—you’re not just in the black, you’re planting a flag in Silver Age history. Speculation isn’t about hype, it’s about awareness.
With James Gunn’s Supergirl film dropping this June, one Silver Age comic from 1961 is already heating up—and it could explode any moment. Action Comics #276, created by Jerry Siegel and Jim Mooney, delivers SIX first appearances in one issue: Phantom Girl, Triplicate Girl, Shrinking Violet, Bouncing Boy, Brainiac 5, and Sun Boy. CGC census? Only 330 graded copies exist, with zero 9.8s on record. A recent 6.0 sold for $399, so imagine the upside if a high‑grade copy surfaces—especially if Gunn pulls any of these characters into the movie. This is a sleeper key with massive potential. Don’t overlook it.
The 1961 Supergirl Key Poised to Explode This Summer
-Jay Katz