Okla. Stat. tit. 12A, § 12A-3-107: Instrument Payable in Foreign Money

INSTRUMENT PAYABLE IN FOREIGN MONEY

Unless the instrument otherwise provides, an instrument that

states the amount payable in foreign money may be paid in the

foreign money or in an equivalent amount in dollars calculated by

using the current bank-offered spot rate at the place of payment for

the purchase of dollars on the day on which the instrument is paid.