Possible Clues:

• Like the "A" in a Hawthorne classic
• Very bright red
• Weal allowed to become red
• Like an A in literature
• Claret's drunk - or another kind of red
• Colour of small runabout perhaps on lease
• Mark from a wound allowed to become red
• Sinful evidence of very minor injury?
• Mark affixed to permit is bright red
• Mark of wound allowed to be red