means a mortgage bond hypothecating any immovable property or a notarial mortgage bond hypothecating specially described movable property in terms of section 1 of the Security by Means of Movable Property Act, 1993 (Act No. 57 of 1993), or such a notarial mortgage bond registered before 7 May 1993 in terms of section 1 of the Notarial Bonds (Natal) Act, 1932 (Act No. 18 of 1932), but excludes any other mortgage bond hypothecating movable property;