This Nautilus DMC-IIB is a great relic hunting machine.  It comes with the desirable 10 inch thick coil, original owner's manual, and original Calrad headphones.  I'm intrigued by this machine; but, I just never became one with it.  I'm used to having a display, depth meter, and pinpoint button on my other machines.  This Nautilus is just raw power with none of those electronic luxuries.  This machine is capable of going deep and making some great finds.  U.S. buyers only please.  I do not ship overseas.  Happy hunting everyone.