Related Clues:

• Natty
• One-in-a-million
• Far from frequent
• With 1-Across, pseudo-wits
• Of interest to collectors, say
• Chophouse request
• Very bright
• Atypical
• Sharply dressed
• Hurt a little
• Quite unusual
• Like a 1943 copper penny
• Out of the ordinary
• Facing extinction
• Answer to a waiter, sometimes