of importations, if necessary. [Comp., 1662.] In seizure cases the collector of customs, after giving a hearing with reference to the offense or delinquency which was the occasion of the seizure, shall in writing make a declaration of forfeiture or fix the amount of the fine which in his opinion shoul d be imposed, or take such other action as may be proper. [Comp., 1690.] SECTION  1531 . Review by Insular Collector . — The person aggrieved by the decision of the collector of customs in any matter presented upon protest or by his action in any case of seizure may, within fifteen days after notification in writing by the collect or of his action or decision, give written notice to the collector signifying his desire to have the matter reviewed by the Insular Collector. Thereupon the collector of customs shall forthwith transmit all the papers in the cause to the Insular Collector, who shall approve, modify, or reverse the action of his subordinate and shall take such steps and make such order or orders as may be necessar y to give effect to his decision. [Comp., 1662, 1690.] SECTION  1532 . Proceedings in Case of Property Belonging to Unknown Parties . — If, within ten days after any seizure, no owner or agent can be found or appears before the collector of customs to claim the property, the collector of customs, after fixing the  amount of the fine which in his judgment ought to be imposed, or making a declaration of forfeiture, as the case may require, shall forthwith transmit all the papers in the cause to the Insular Collector, by whom appropriate action shall be taken in the p remises. [Comp., 1690, 1681.] SECTION  1533 . Notice of Decision of Insular Collector . — Written notice of the decision made by the Insular Collector shall be given to the party or parties by whom the cause was brought before him for review, and in seizure cases such notice shall be effe ctuated by personal service, if practicable. [Comp., 1663, 1681.] SECTION  1534 . Review in Court of First Instance . — The party aggrieved by the decision of the Insular Collector in any matter brought before him upon protest or by his action or decision in any case of seizure may procure the 447 Copyright 2012 CD Technologies Asia, Inc. and Accesslaw, Inc. Philippine Law Encyclopedia 2011