Possible Clues:

• Quirkiness
• Strange occurrence, person or thing
• Curiosity - one's mathematical quality?
• Quality of strangeness
• Eccentric doctor (Italian) in outskirts of Oswestry
• Bowie's unusual space item
• 'Believe It Or Not!' item
• Something unusual that might be worth collecting
• Twelve months
• Something peculiar, person or event