187Attribution of values to specific investments
(1)This section shall have effect in determining the value for the purposes of this Act (and, accordingly, the market value for the purposes of capital gains tax under section 153 of the [1979 c. 14.] Capital Gains Tax Act 1979) of any investment (in this section referred to as a " specific investment") which is included among the investments to which a claim relates.
(2)Subject to the following provisions of this section, the value of a specific investment shall be its sale value.
(3)Subject to the following provisions of this section, in a case where the calculation of the loss on sale of the investments to which a claim relates is affected by section 180 above—
(a)if the value on death of a specific investment exceeds its sale price, the value of that investment shall be the aggregate of its sale value and an amount equal to the relevant proportion of the difference between its sale price and its value on death ; and
(b)if the sale price of a specific investment exceeds its value on death, the value of the investment shall be its sale value less an amount equal to the relevant proportion of the difference between its value on death and its sale price.
(4)For the purposes of subsections (2) and (3) above, the sale value of a specific investment in respect of which an amount has been paid in pursuance of a call, as mentioned in section 182 above, shall be reduced by the amount so paid in respect of that investment.
(5)In a case where, by virtue of subsection (3) of section 183 above, the value on death of the new holding, within the meaning of that section, includes an amount equal to the consideration referred to in that subsection, the sale value of any specific investment comprised in the new holding shall be reduced, for the purposes of subsections (2) and (3) above, by an amount which bears to that consideration the like proportion as the value on death of the specific investment sold bears to the value on death of the whole of the new holding.
(6)In subsection (3) above " sale price", in relation to a specific investment, means the price for which the investment was sold by the appropriate person or, if it is greater, the best consideration which could reasonably have been obtained for the specific investment at the time of the sale; and section 181 above shall apply for the purposes of this subsection as it applies for the purposes of section 179(1)(b).