Here's Amazing Mystery Funnies, which I believe was published by Centaur Comics. You'll note that this cover has the distinctive signature of Bill Everett, creator of the Sub-Mariner on it. I'm not sure, but I suspect this was from before he started at Marvel/Timely.
This book's main claim to fame, however (unless my memory is faulty tonight), is the later introduction of Speed Centaur, probably the only centaur super-hero in comics history!
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