(1) For the purposes of the Capital Gains Tax Acts, where the same person in the same capacity disposes of shares of the same class as shares which such person acquired within 4 weeks preceding the disposal, the shares disposed of shall be identified with the shares so acquired within those 4 weeks.
(2) For the purposes of the Capital Gains Tax Acts, where the quantity of shares of the same class disposed of exceeds the quantity of shares of the same class acquired within the period of 4 weeks preceding the disposal, the excess shall be identified with shares of the same class acquired otherwise than within the period of 4 weeks.
(3) Where a loss accrues to a person on the disposal of shares and such person reacquires shares of the same class within 4 weeks after the disposal, that loss shall not be allowable under section 538 or 546 otherwise than by deduction from a chargeable gain accruing to such person on the disposal of the shares reacquired; but, if the quantity of shares so rea
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