Related Clues:

• Hamilton bills
• Hamilton commemoratives
• Column in math
• Treasury bills?
• Ice skating figures
• Redesigned U.S. currency in 2006
• They're often seen with kings and queens
• They get shuffled around
• Easy-to-count groupings
• Old pros
• Cash-register compartment
• Dressed to the __
• Counting intervals, perhaps
• Register section
• They are not returned properly