4.75x8x2-5/8" deep illustrated cardboard box contains 7.25" long small child's rubber swim fins model #S930, each emblazoned w/Superman image. Super-Swim, Inc. © National Comics Publications, Inc. c. mid-1950s. Part of an extensive line of Superman swimming gear produced at this time that included larger size fins and several other kits. Fins are lightly aged from storage but are VF/Exc. overall, unused old store stock. Die-cut display lid shows Superman w/boy and girl wearing goggles/swim fins. Lid has been punched as designed. Box has scattered lt. aging and wear w/grease penciling on top but remains structurally sound and VF. Box mentions included 2-3/8x3.75" "Superman Safety Swim Club" membership card w/nice "Superman" image and comic book title logo. Back of card has club safety rules. Unused. Exc.