Related Clues:
- Letters that promise payback
- Obligatory letters
- Payback pledge
- Short note?
- Marker for a poor gambler
- Gambler's promise, slangily
- Letters from the hole?
- Frequent preceder of a dollar amount
- Slip in the pot, occasionally
- Note in a pot
- Hole note?
- Outstanding indication
- Bettor's marker
- Payment-to-come-later note
- "Bill me later" note