Related Clues:

• Top number on many clocks
• A dozen ova?
• Noon on a garden dial
• Top of some clocks
• Number between I and XI?
• Constitutional Amendment about presidential election procedures
• Top of the clock
• It's at the top of some clocks
• Highest numeral on some fancy watches
• Midnight, on a grandfather clock
• Common clock topper
• Clock-top number
• Noon, on some clocks
• Top number on a grandfather clock
• Top numeral on a sundial