Valuation of shares under section 37 excluded from Circular No.1 D/ED and governed by Board letters of 1965. The Board directs that Circular No.1 D/ED of 1968 shall not apply to valuation of shares covered by section 37 of the Estate Duty Act beyond the circumstances in paragraph 5 of that circular, and that valuation of such shares shall be governed by the Board's letters of 3 May 1965 and 5 July 1965 issued from F.No.25A/3/65 ED.