42 U.S.C. § 2323
Basis of appraisal
Except for lots sold pursuant to the provisions of section 2347(a) of this title , the appraised value shall be the current fair market value of the Government’s interest in the property.
( Aug. 4, 1955, ch. 543 , ch. 3, § 33, 69 Stat. 474 .)