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Detective Comics #171 cover
Cover: Win Mortimer

Detective Comics #171

May 1951 · DC · 0.10 USD
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In "The Menace of the Giant Birds!", the Penguin, newly released from prison, claims he's gone straight and opens a bird refuge—though Batman remains skeptical. As he and Robin trail the Penguin through Gotham’s streets, they find him visiting a bank, a jewel importer, a metal refinery, a nightclub, and a curio shop, each time returning stolen goods. But when Batman realizes these returns are part of a larger, more dangerous plan, he must uncover the truth before the Penguin’s latest scheme takes flight. Written by Bill Finger and illustrated by Dick Sprang with inks by Charles Paris, this 1951 classic features a cover by Win Mortimer.

Contains 7 stories
The Menace of the Giant Birds!
12 pp · Superhero
Batman [Bruce Wayne]Robin [Dick Grayson]The Penguin [Oswald Cobblepot]unnamed prison guardunnamed henchmenunnamed bank managerJohn Willis (jewel importer)unnamed metal refinery managerunnamed night club managerunnamed curio shop manager

In "The Menace of the Giant Birds!", the Penguin, freshly released from prison, claims he’s reformed and opens a bird refuge—but Batman remains skeptical. As the Dynamic Duo trail him through Gotham, he visits a bank, a jewel importer, a metal refinery, a nightclub, and a curio shop, returning stolen goods one by one. But when Batman realizes these returns are part of a larger, more dangerous plan, he must uncover the truth before the Penguin’s next move unleashes a flock of monstrous birds upon the city.

Untitled Humor story
0.75 pp · Humor, Teen
Varsity Vic
The Amazing Mr. Planet!
8 pp · Detective-Mystery
Roy RaymondKarenProfessor ShermanMr. PlanetJim ColemanAbsforthHobart
The Powerless Robot!
6 pp · Superhero
Robotman [Robert CranePaul Dennis]Pete MerrickSwipes (crook)Grabber (crook)
Untitled Humor story
0.5 pp · Humor
Casey the Cop
Black and Blue!
4 pp · Humor
DoverClover
Indian Posse!
10 pp · Western-Frontier
Pow-Wow Smith [Ohiyesa Smith]Sheriff AmesRaynor (crook), Collins (crook)

ComicBooks.com Value

Our Model is In Beta
Raw (Good) $106
CGC 9.2 · 1 in census $5,586*
CGC 9.0 · 3 in census $5,586
CGC 8.5 · 8 in census $2,869
CGC 8.0 · 1 in census $2,082*
CGC 7.5 · 5 in census $1,671
CGC 7.0 · 8 in census $1,271
Show all 19 grades
CGC 6.5 · 6 in census $1,165*
CGC 6.0 · 4 in census $905
CGC 5.5 · 5 in census $847*
CGC 5.0 · 4 in census $562
CGC 4.5 · 8 in census $542
CGC 4.0 · 8 in census $542
CGC 3.5 · 6 in census $470
CGC 3.0 · 2 in census $470*
CGC 2.5 · 7 in census $372
CGC 2.0 · 2 in census $337
CGC 1.5 none in existence
CGC 1.0 none in existence
CGC 0.5 · 1 in census $164*
* 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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Full credits

cover pencils, inks Win Mortimer

Reprints

Reprinted in Stålmannen #10/1953 (1953), Superboy #92 (1956), Detective Comics #250 (1957), Five-Score Comic Monthly #12 (1959), Superboy #93 (1961), Batman: The Golden Age Omnibus #7 (2019)

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