Related Clues:

• Turnstile coin
• Subway turnstile feeder
• Bus fare, sometimes
• Subway fare, perhaps
• Monopoly battleship, e.g.
• Fare piece
• Thimble or shoe, in Monopoly
• Kind of booth or opposition
• Temporary tender
• Certificate of indebtedness
• Midway coin
• Emergency currency
• Coin at an arcade
• Transit fare, at times
• It'll get you on the bus, maybe