NRS 108.430

If the owner, or the owner’s agent, fails to demand the surplus within 6 months from the time of the sale, then it shall be paid over to the county treasurer of the county in which the sale is made, to be held by the county treasurer for a period of 12 months, subject to the order of the owner, after which time, if the same is not paid to the owner, or the owner’s authorized agent, or some person legally entitled to receive the same, it shall be paid over to the treasurer of the county where the sale is made, who shall pay the same over to the State Treasurer for the benefit of the State Permanent School Fund.