That is a known fake. It is a Mark English forgery.
The "Kappa" had just a printed moire' pattern; not a two-piece as shown on the forgery. Many of the Mark English forgery's are overly aged and this is a perfect example. Of course no one wants to believe that they were duped; and most owners of these fakes refuse to accept that they are not original. There is so much information available now that it is extremely hard to pass off a fake as an original. This was not the case 10 or more years ago when many of these fakes changed hands and were auctioned off at reputable auction houses.