I've never seen a number like that stamped in the wheels.
As for the shares, many aftermarket manufacturers used left hand thread bolts...I think it's a myth, but I've been told left handed threads would hold tighter than right handed; but if you're like me plowing fast enough to create harmonic vibrations strong enough to loosen a bolt isn't a problem.
STAR was an aftermarket plow parts supplier. The other share may be deere, but I can't tell from the picture.
Tyler in IL