Cal. FIN § 1635

At any time after two years from the day when a safe-deposit box has been opened pursuant to this article, the bank may mail a notice to the person in whose name such box stood on its records, stating that unless the amounts due to the bank for rental, for the cost of mailing and publishing notice of sale, and for its charges for opening the box and for custody of its contents, and any other proper charges, giving the total amount thereof, are paid, the bank will offer for sale the contents thereof at a time and place named in such notice, which time shall be at least 30 days after the mailing thereof. If the amounts specified in such notice are not paid before the time of sale designated therein, the bank may sell all or any portion of the contents of such box, other than contents of the character described in Section 1668 and other than bonds and other securities which at the time of sale are listed on an established stock exchange in the United States, at public sale at the time and place given in such notice. Notice of the time and place of sale shall be published in a newspaper of general circulation in the county in which the sale is to be held once at least five days before the date of sale, or if no such newspaper is published in the county such notice shall be posted in three public places in the county at least five days before the date of sale. Such notice need describe the property only in general terms and as the unclaimed contents of a safe-deposit box. Such sale may be postponed from time to time by public pronouncement at the time and place of sale.