Related Clues:

• More valuable, as coins
• More valued, in a way
• More valuable to collectors
• Farther out there
• More commonplace
• More puzzling
• More valuable, perhaps
• Not as numerous
• Less mundane
• Harder to hunt down
• Nobody you know
• Further off the beaten path
• More irregular
• Not seen as much
• Not so easy to get one's hands on