Key legal question
Whether unlisted shares must be valued under the official guideline for securities without market quotation.
Extracted holding
Yes. Unlisted shares are to be valued according to the guideline; the valuation method is the rule for determining market value.
Extracted reasoning
Art. 14 StHG and § 67 Abs. 2 StG require market-value assessment with due regard to earnings and substance. For securities without market quotation, the cantonal implementing rule makes the national guideline binding.