Commentaries: Art. 1031

Where the bill of exchange is denominated in a currency other than that of the bill domicile, the bill amount may be paid in the national currency at its value as at the maturity date. Where the obligor delays in making the payment, the holder is free to choose whether the bill amount is converted into the national currency at the rate that applies on the maturity date or the rate that applies on the payment date.
The value of the foreign currency is determined according to customary commercial practice at the bill domicile. However, the drawer may stipulate an exchange rate for the bill amount on the bill of exchange.
The provisions of the two previous paragraphs do not apply if the drawer has stipulated payment in a specified currency (actual currency clause).
Where the bill of exchange is denominated in a currency which has the same name but a different value in the country in which the bill was drawn and that in which it is payable, the presumption is that the currency meant is that of the bill domicile.