Related Clues:

• April abbr.
• Largest U.S. collection agcy.
• 1040 org.
• Pretty pink
• Like an 1864 two cent piece
• Remarkable
• Like a black pearl
• Quite uncommon
• Pink or red, e.g.
• Endangered
• Pink, to a chef
• Seen once in a blue moon
• Recipient of many unhappy returns
• ___ agent
• Auditor's org.