Cover: Curt Swan & Murphy Anderson
Superman #228
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The Mystery Bombers!
Alien slavers (villains)Clark KentSupermanJimmy Olsen
In "The Mystery Bombers!", Superman races against time as alien slavers unleash a series of explosive devices across Earth, each one tied to a library’s stored knowledge. With Clark Kent and Jimmy Olsen at his side, the Man of Steel must uncover the source of the blasts before the planet’s entire collective wisdom is destroyed—before the invaders seize it all.
Execution Planet!
The Anti-Superman Gang (villains)SupermanClark KentLois LaneJimmy OlsenSuperman Robots
ComicBooks.com Value
Our Model is In Beta
Raw (Fine) $10
CGC 9.8 · 2 in census $620
CGC 9.6 · 7 in census $184*
CGC 9.4 · 9 in census $106*
CGC 9.2 · 5 in census $75*
CGC 9.0 · 3 in census $61*
CGC 8.5 · 4 in census $50*
Show all 16 grades ▾
CGC 8.0 none in existence
CGC 7.5 · 5 in census $40*
CGC 7.0 · 2 in census $34*
CGC 6.5 · 1 in census $31*
CGC 6.0 · 1 in census $30*
CGC 5.5 · 2 in census $23*
CGC 5.0 · 3 in census $22*
CGC 4.5 · 1 in census $20*
CGC 4.0 none in existence
CGC 3.5 · 2 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
This exact issue on ebay
CGC 7.5 $109 1 listing CGC 6.5 $115 1 listing Raw — MINT $100 1 listing Raw — NM- $94.97 1 listing Raw — FN $18 1 listing Raw — VG+ $9.99 1 listing
Raw / ungraded ▾ $9.99–$49.99 9 listings
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Full credits
writer Bob Haney
artist Curt Swan
inker George Roussos
cover pencils Curt Swan
cover inks Murphy Anderson
Reprints
Reprinted in Supermann #22/1970 (1970), Superman et Batman et Robin #32 (1971), Superman et Batman et Robin #33 (1971), Superman Taschenbuch #34 (1981), Superman #38, Superman #43
Key issues in Superman
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