1) Amusement arcade items 2) Appreciation units 3) Arcade game inserts 4) Arcade items 5) Arcade machine inserts 6) Arcade scrip 7) Centipede feeding 8) Coin substitutes 9) Coin substitutes, often 10) Coinlike pieces 11) Game coins 12) Game pieces 13) Mememtos 14) Mementos 15) Octet in Monopoly 16) Pre-paid road coins 1) Earnests 
» See purples