173. Perpetual debentures

Notwithstanding any other law, a condition contained in a debenture or in a trust deed for securing a debenture, whether the debenture or trust deed is issued or made before or after the commencement of this Act shall not be invalid by reason that the debentures are made irredeemable or redeemable only on the happening of a contingency however remote or on the expiration of a period however long.