Purchase money mortgages on real property referred to in § 1129(a) of this title shall be valued in an amount not exceeding the acquisition cost of the real property covered thereby or 90% of the fair value of such real property, whichever is less.
18 Del. C. 1953, § 1117; 56 Del. Laws, c. 380, § 1; 80 Del. Laws, c. 117, § 2.