Possible Clues:

• Peculiar man lit up, whitish-grey
• Special nuptial mass for recent jubilee
• Something highly desirable containing a metal or another
• A canister placed in choice metal
• Metal tin, a lump processed
• Metal on the periodic table
• Desirable thing to bank a metal -- this one's precious!
• Element number 78
• Metal in some catalytic converters
• Lamp unit made from metal