On the appointment of a receiver for the taxpayer in any receivership proceeding before any court of the United States or of any State or of the District of Columbia, any deficiency (together with all interest, additional amounts, and additions to the tax provided by law) determined by the Secretary in respect of a tax imposed by subtitle A or B or by chapter 41, 42, 43, or 44 on such taxpayer may, despite the restrictions imposed by section
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(a) on assessments, be immediately assessed if such deficiency has not theretofore been assessed in accordance with law.