Regards the Item, does this person have family? if known, could his family claim if this item was sold? If he knows where to find you, can his family? as said, put a notice of intention that if the item has not been claimed within a time period of 6 Months stating the start / end date, a contact address, that the Item will be sold to cover handling. if this Item has family value I'm sure someone will come out of the woodwork as they do when there is value. If you have a bank, can you ask them the price to keep it in their vault?