Spent couple of hours at Takapuna during low tide learning the beach and sand movement.
Didn't get much$$ or any rings, but found Nokia 6600I RRP 200$
The phone is dead, no way for recovery.
However, Memory card survived and has a number of Photos that might be valuable to the owner.
I will call 2degrees tomorrow and will ask them to track customer by Sim card Number and see if i can talk to the person :-)