The payment of debts in money shall be made in the currency stipulated, and if it is not possible to deliver such currency, then in the currency which is legal tender in the Philippines.
The delivery of promissory notes payable to order, or bills of exchange or other mercantile documents shall produce the effect of payment only when they have been cashed, or when through the fault of the creditor they have been impaired.
In the meantime, the action derived from the original obligation shall be held in the abeyance. (1170)