1. The state tax commission shall have the power to assess, adjust and equalize the distributable property herein specified of any railroad company, in whole or in part, for any of the five preceding years which has been or which may hereafter be omitted from assessment, adjustment and equalization, and to reassess, adjust and equalize any such distributable railroad property, in whole or in part, as the case may be, for any year or years for which it may have been heretofore or in which it may hereafter be assessed, adjusted and equalized, but which assessment, adjustment and equalization, for any cause has been or which may hereafter be held by the courts to be irregular or void.

2. The double assessment on such omitted distributable property provided in subsection 2 of section 151.060 shall also apply under this section.