Possible Clues:

• Graphic symbol
• Emoticon, e.g.
• Character in Chinese, e.g.
• I had backed horse full of energy and character
• In westbound motorway fixed eg road sign
• 'No smoking' symbol, e.g.
• Credit one manuscript value to The Professor character
• Do mirage elements suggest such a symbol?
• Smiley face, e.g
• Airport sign I follow — welcoming English sign