Related Clues:

• Seesaw necessity
• What turns 19 into 21?
• Ace plus one
• See 6-Down
• Afternoon hour
• Pair
• King Cole's fiddlers, e.g.
• See 15-Across
• It's just over 14-Across
• Bottom of a suit
• Figure
• Company, proverbially
• Perpetual time on the clock at Independence Hall
• Small number
• Carlos I, II, III or IV