Related Clues:
- Debtor's onus
- Poker pot paper, perhaps
- Promise of repayment
- Indebtedness initials
- Gambler's debt, so to speak
- Letters on a note
- Promise of a sort
- Letters on a chit
- It might be called in
- Paper in a pot, maybe
- Letters denoting debt
- Promise to repay
- Informal debt instrument
- Short notice?
- Letters that could precede a dollar sign