Campy / shimano campatible freehub body help

[cxboy]

I picked up a set of eurus wheels with what appears to be a shimano compatible freehub body. I have used the shimano bodies in the past and they have not looked like the attached link and photo.
First picture, shimano with campy box...second picture, freehub in question body mounted on eurus wheel As you can see the spline is much different, but The shimano cass. slides on fine buy has a bit on play that in not noticed once the lock ring is tightened down....
please advise