14 Processed or semi-processed precious metals; bullion, bars, and ingots of precious metals; gold; silver; platinum; palladium; gold bullion; gold bullion collectible, commemorative, and non-monetary coins; gold ingots; gold ore; silver bullion; silver bullion collectible, commemorative, and non-monetary coins; collectible, commemorative, and non-monetary coins; silver ore; collectible coins; commemorative coins; non-monetary coins; precious metals and their alloys