Conn. Gen. Stat. § 12-646

The Commissioner of Revenue Services may require the donor or the donee to show the property subject to the tax, as provided in this chapter, to the commissioner upon demand and may employ a suitable person to appraise the property. The donor shall submit a declaration, prescribed as to form by the Commissioner of Revenue Services and bearing notice to the effect that false statements made in such declaration are punishable, that the property shown by said donor on said donor's return to the commissioner includes all of the property transferred by gift for the calendar year involved and not excluded herein.