A visually stunning 1970 Greek postage stamp illustrating the mythological battle between Heracles (Hercules) and the river god Achelous. The design is inspired by ancient Greek vase painting, featuring a vivid palette of blue, orange, and black. Heracles is shown wrestling Achelous, who has transformed into a powerful man-bull-serpent hybrid (specifically a mer-man with a serpentine lower body).
 
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