(1) In the case of property distributed, sold, exchanged, or otherwise disposed of, within 6 months after the decedent’s death such property shall be valued as of the date of distribution, sale, exchange, or other disposition.
(2) In the case of property not distributed, sold, exchanged, or otherwise disposed of, within 6 months after the decedent’s death such property shall be valued as of the date 6 months after the decedent’s death.
(3) Any interest or estate which is affected by mere lapse of time shall be included at its value as of the time of death (instead of the later date) with adjustment for any difference in its value as of the later date not due to mere lapse of time.
(1) for purposes of the charitable deduction under section 2055 or 2106(a)(2), any bequest, legacy, devise, or transfer enumerated therein, and
(2) for the purpose of the marital deduction under section 2056, any interest in property passing to the surviving spouse,
(1) the value of the gross estate, and
(2) the sum of the tax imposed by this chapter and the tax imposed by chapter 13 with respect to property includible in the decedent’s gross estate (reduced by credits allowable against such taxes).
(1) In general
The election provided for in this section shall be made by the executor on the return of the tax imposed by this chapter. Such election, once made, shall be irrevocable.
(2) Exception
No election may be made under this section if such return is filed more than 1 year after the time prescribed by law (including extensions) for filing such return.