Related Clues:

• Uncommonly good
• Once-in-a-lifetime
• Like hens' teeth, so to speak
• Like a 1909-S VDB penny
• Chophouse order
• In short supply
• Cryptic
• Not well done
• Recondite
• Still mooing, so to speak
• Medium-___
• Coin grade
• Like a condor
• Steak choice
• Reply to the waiter, perhaps