In general
If section 1250 property is disposed of after December 31, 1963 , and the amount determined under paragraph (1)(A)(ii) exceeds the sum of the amounts determined under paragraphs (1)(A)(i) and (2)(A)(i), then the applicable percentage of the lower of—
(i)#
that portion of the additional depreciation attributable to periods before January 1, 1970 , in respect of the property, or
(ii)#
the excess of the amount determined under paragraph (1)(A)(ii) over the sum of the amounts determined under paragraphs (1)(A)(i) and (2)(A)(i),
shall also be treated as gain which is ordinary income. Such gain shall be recognized notwithstanding any other provision of this subtitle.