Related Clues:

• Flea market find
• Conversation piece
• Hole in one, e.g.
• Hole-in-one, e.g.
• Objet d'art
• Decorative novelty
• It doesn't happen often
• It hardly ever happens
• Collector's item
• Unusual object
• Curio
• Something unusual
• Unusual museum piece
• Bibelot
• Bric-a-brac item