Full text
For the purpose of applying subsection (16) to determine the fair market value of a gift made at any time by a taxpayer, the fair market value of consideration given to acquire property described in subparagraph (16)(c)(i) or of property described in subparagraph (16)(c)(ii) is deemed to be that value otherwise determined minus any portion of it that has been applied under that subsection to reduce the fair market value of another gift made before that time by the taxpayer.