One Riyal notes, higher denomination notes and parts thereof issued by the Saudi Arabian Monetary Agency shall be legal tender and shall be fully accepted for the settlement of all debts and private and public obligations, but no one shall be obliged to accept sub-divisions of the Riyal for sums exceeding ten Riyals, except the Saudi Arabian Monetary Agency and its branches and agencies which shall, in the public interest, accept, either for payment to the treasury or for exchanging them with other denominations, any amounts of any denominations of the Saudi currency issued by it.