IMO- the one shown above and the link below are both aftermarket models with a right & left hand flange..
there is an orig. porcelain flange firestone tire &
there are aftermarket models of the same with the flange's
black on the aftermarket & white on the originals ...
our old friend Ray,http://www.ebay.com/itm/FIRESTONE-TIRES-...o-/381327530669