Related Clues:

• Sawbucks
• Cash-drawer section
• Hamilton bills
• Hamilton commemoratives
• 'Terrible' ages
• Column in math
• Treasury bills?
• Redesigned U.S. currency in 2006
• Uncommon dice rolls
• Easy-to-count groupings
• Theme of the puzzle, in part
• Cash-register compartment
• Counting intervals, perhaps
• Register section
• Pairings