(1) Any conveyance or transfer operating as a voluntary disposition inter vivos shall be chargeable with the same stamp duty as if it were a conveyance or transfer on sale, with the substitution in each case of the value of the property conveyed or transferred for the amount or value of the consideration for the sale.

(2) Notwithstanding subsection (1), this section shall not apply to a conveyance or transfer operating as a voluntary disposition of property to a body of persons incorporated by a special Act, if that body is by its Act precluded from dividing any profit among its members and the property conveyed is to be held for the purposes of an open space or for the purposes of its preservation for the benefit of the nation.

(3) [deleted]

(4) Any conveyance or transfer (not being a disposition made in favour of a purchaser or incumbrancer or other person in good faith and for valuable consideration) shall, for the purposes of this section, be deemed to be a conveyance or transfer operating as a voluntary disposition inter vivos, and the consideration for any conveyance or transfer shall not for this purpose be deemed to be valuable consideration where marriage is the consideration, or part of the consideration, or where the Commissioners are of opinion that by reason of the inadequacy of the sum paid as consideration or other circumstances the conveyance or transfer confers a substantial benefit on the person to whom the property is conveyed or transferred.