JAC330906 Blade 19″ x 2″, 7/16″ center hole

JAC330906 Blade 19" x 2", 7/16" center hole.  This blade has been sitting in inventory for a while.  The blade is marked as JAC330906–suspect it is a Jacobsen blade, but there is a doubt.  The blade has discoloration/rust/scratches, but is solid.  This blade is an old one and is not painted.