Related Clues:

• Nearly extinct
• Still pink
• Uncommonly good
• Nobody's fool
• Once-in-a-lifetime
• Like hens' teeth, so to speak
• Like a 1909-S VDB penny
• Chophouse order
• Kind of cookie?
• In short supply
• Like some watches
• Not well done
• Still mooing, so to speak
• Quick on the uptake
• Medium-___