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Superboy #78 cover
Cover: Curt Swan & Stan Kaye

Superboy #78

Jan 1960 · DC · 0.10 USD
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In "Claire Kent, Alias Super-Sister!", Superboy teams up with his cousin Jo to uncover the surprising truth behind Superman’s iconic costume—revealing, for the first time, that it was crafted from Kryptonian blankets. With art by John Sikela and dynamic cover by Curt Swan and Stan Kaye, this 1960 issue offers a fresh, heartfelt look at the legacy of the Kryptonian legacy, all while keeping the mystery of how the fabric came to be firmly intact.

Contains 5 stories
Claire Kent, Alias Super-Sister!
9 pp · Superhero
Shar-La (introduction)

In "Claire Kent, Alias Super-Sister!", Superboy’s heroic rescue of a stranded spacecraft takes a surprising turn when the pilot, Shar-La, transforms him into a girl after taking offense at his chauvinistic attitude—leaving him to navigate the challenges of a new identity while still fighting to protect the day.

Untitled Humor story
1 pp · Humor
The Origin of Superboy's Super-Costume!
8 pp · Superhero

In this 1960 tale from Superboy #78, the mystery of how Superman’s iconic costume came to be is finally revealed—unfolding the surprising process behind its creation from Kryptonian blankets. The story offers a fascinating glimpse into the origins of the Man of Steel’s legendary suit, blending science and sentiment in a way that deepens the connection to his alien heritage.

Untitled Humor story
0.67 pp · Humor
The Ghost of Jor-El!
9 pp · Superhero
Mxyzptlk (first meeting with Superboy)Fuzastl (introduction, Mxyzptlk's father)Tlndsa (introduction, Mxyzptlk's mother)

In "The Ghost of Jor-El!", Superboy faces a bizarre threat when the mischievous Mxyzptlk, newly arrived from the fifth dimension, turns his antics against the young hero. When the ghost of Jor-El appears, demanding Superboy leave Earth, the situation grows even more surreal—until a clever twist involving reversed colors and a fateful backward name reveal unravels the prank.

ComicBooks.com Value

Our Model is In Beta
Raw (VG) $39
CGC 9.6 · 1 in census $1,320*
CGC 9.4 · 2 in census $676*
CGC 9.2 none in existence
CGC 9.0 · 2 in census $307
CGC 8.5 · 3 in census $214*
CGC 8.0 · 8 in census $214
Show all 20 grades
CGC 7.5 · 6 in census $111
CGC 7.0 · 5 in census $96
CGC 6.5 · 7 in census $78*
CGC 6.0 · 6 in census $70*
CGC 5.5 · 5 in census $55*
CGC 5.0 · 5 in census $55
CGC 4.5 · 2 in census $44*
CGC 4.0 · 5 in census $43*
CGC 3.5 · 3 in census $36*
CGC 3.0 · 2 in census $28
CGC 2.5 · 1 in census $24*
CGC 2.0 none in existence
CGC 1.5 none in existence
CGC 1.0 · 1 in census $20*
* estimate — limited direct-sales data at this grade
Our model’s value — refined as new sales data arrives · CGC census counts shown where available

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Cast · 9 characters

Full credits

artist, inker John Sikela
cover pencils Curt Swan
cover inks Stan Kaye

Reprints

↩ Reprints Batman #91 (1955)

Reprinted in Superman Annual #8 (1963), 80 Page Giant Magazine #1 (1964), Superman #2/1966 (1966), Superman #11/1967 (1967), Superman album #2 (1967), Superman en Batman #6/1967 (1967), Superman Annual #1968 (1968), Superboy #20 (1969), Limited Collectors' Edition #C-45 (1976), Superman Presents Superboy Comic #109 (1978), Superboy Spectacular #1 (1980), Superman Superband #16 (1981), Super DC #7

Key issues in Superboy

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