Related Clues:

• '___ as a winter swallow': Balzac
• Like a 52-Across
• Like a blue rose
• Collector's adjective
• Reddish pink
• Like some steaks
• Roast beef request, sometimes
• Coin classification
• Hard to get
• More than uncommon
• Nearly unobtainable
• Like the spotted owl
• Antiquarian's adjective
• Unwonted
• Not easily found