( c ) Other contraband of commercial value and capable of legitimate use may be sold under such restrictions as will insure its use for legitimate purposes only; but if the thing is unfit for use or the collector is of the opinion that, if sold, it would be  used for unlawful purposes, it may be destroyed in such manner as the collector shall direct. SECTION  1553 . Establishment of Contraband Character of Merchandise . — For the purpose of ascertaining and establishing the contraband character of merchandise, the collector of the port may appoint a board of three, at least two of whom shall be officers of  the Bureau of Customs, to examine and report to him upon the matter. [355-279, 280.] SECTION  1554 . Disposition of Property Remaining Unsold for Want of Bidders . — When any property exposed to sale by the customs authorities remains unsold for want of bidders and the collector shall be of the opinion that further attempt to sell at auction  is inadvisable, he shall appoint a board of three, at least two of whom shall be officers of the Bureau of Customs, and if said board shall report that the property is of no commercial value, or unfit for use or sale, or a menace to the public health, it s hall be destroyed; but if found to be fit for use or sale and to have commercial value, it shall be disposed of to the best advantage, in the discretion of the Collector, at public or private sale, or otherwise, as may be practicable. [355-278-280.] SECTION  1555 . Disposition of Dangerous Explosives . — Gunpowder or other dangerous or explosive substances, except firecrackers, shall not be deposited in a bonded warehouse, and when not entered for immediate use, transportation, or export, shall be subjec t to such disposition, in the discretion of the Secretary of Finance and Justice, as is consistent with the public safety. Expenses incurred in such disposition shall constitute a lien on the goods and a charge against the owner. [355-250, 405.] Miscellaneous Administrative Provisions SECTION  1556 . Duty of Collector of Customs to Report Rulings to ARTICLE  XX Copyright 2012 CD Technologies Asia, Inc. and Accesslaw, Inc. Philippine Law Encyclopedia 2011 454