a transaction in which one party agrees to deliver a quantity of a specified money or unit of account in consideration of the other party's agreement to deliver another quantity of a different money or unit of account either currently or at a future date, and in which delivery is to be through funds transfer, book entry accounting, or other form of payment order, or other agreed means to transfer a credit balance. The term includes a transaction of this type involving two or more moneys and spot, forward, option, or other products derived from underlying moneys and any combination of these transactions. The term does not include a transaction involving two or more moneys in which one or both of the parties is obligated to make physical delivery, at the time of contracting or in the future, of banknotes, coins, or other form of legal tender or specie