Like New Vintage ScubaPro Jet Fins Scuba Diving Snorkeling Fin Flippers #350 with Original Box

Like new Scuba Pro Jet Fin Adjustable black rubber scuba fin flippers Catalog Number 350 with original box.  Nowhere does it state a size eg. M, L or XL, but a man that wears a size 10 shoe tried them on and they fit just fine. Sticking a tape measure inside measures 8 5/8″  to edge of rubber.   No damage, barely used, box shows minor shelf wear and still has original price of $20.00.  Matching Mask also available.