If any grantor or lessor shall die, become insane, or go out of the state before the acknowledgment of a deed or lease, proof of due execution of such deed or lease may be made by the oath of 2 witnesses acquainted with the handwriting of the grantor or lessor that the deed or lease was signed by said grantor or lessor.
RSA 477:12
RS 130:9. CS 136:9. GS 121:9. GL 135:9. PS 137:9. PL 213 :12. RL 259:12. RSA 477:12. 1981, 303:9, eff. Aug. 15, 1981.