Special rules
(2) Special rules. For purposes of subparagraph (1) of this paragraph: (i) A binding contract entered into on or before October 9, 1969, means a contract, whether written or unwritten, which on or before that date was legally enforceable against the taxpayer under applicable law. If on or before October 9, 1969, a taxpayer grants an irrevocable option or irrevocable contractual right to another party to buy certain property and such other party exercises that option or right after October 9, 1969, the sale of such property is a sale pursuant to a binding contract entered into on or before October 9, 1969. The application of this subdivision may be illustrated by the following example: