Related Clues:
- Visa competitor, briefly
- Place for a stamp
- Foreign-travel necessity
- Charging giant, informally
- Charge option
- 'Don't leave home without it' card
- Stamp collector?
- Visa competitor, familiarly
- Discover competition
- Credit card offerer
- Type of endorsement
- Shopper's card, often
- Certain charge card, informally
- International terminal document
- Alternative to Visa or MC