+1 on penetrating oil. Sheldon's 'big bolt' technique
would be a good way to get this cup out.
Otherwise, consider using a hammer and punch/chisel since there might not be enough lip to grip with a wrench or even a vise. There are special tools made to remove this type of cup. Your LBS might have one but since this type of BB is old and obsolete I wouldn't count on it. I would recommend replacing the BB anyway so you don't have much to lose by using a hammer and chisel.
Finally, unless this is a French threaded BB (unlikely given the 4130 sticker...) it is left-handed thread so will unscrew in clockwise direction.
edit - just realized tellyho already linked you to Sheldon's site. RIP Sheldon, we'll all miss you!