292. Where a decrease in the fair market value of a personal-use property of a corporation, partnership or trust may reasonably have had the effect of reducing or changing into a loss the gain that a taxpayer would have realized from the disposition of a share of the capital stock of a corporation, an interest in a trust or in a partnership or of increasing the loss which would have resulted from such disposition, the amount of the gain or loss is deemed that which would have resulted from it, if the decrease had not occurred.
1972, c. 23, s. 269; 1997, c. 3, s. 71.