Related Clues:

• Gambler's debt, so to speak
• Letters on a note
• Promise of a sort
• Letters on a chit
• It might be called in
• Promises of payment: Abbr.
• Paper in a pot, maybe
• Letters denoting debt
• Promise to repay
• Creditor's stack
• Informal debt instrument
• Short notice?
• Letters that could precede a dollar sign
• Offering from a short person
• Slips in pots