Related Clues:

• It may be petty
• Mint products
• Change, e.g.
• Change for a pound
• Dollar divisions
• Cold hard stuff?
• You can get ten for a dollar
• Pound portions
• Register money
• Change from a pound
• Coppers
• They fill the bill (and this puzzle's theme)
• Change for a nickel
• Nonfoldable money
• Payment means