All bonds and coupons issued by the municipality shall be executed as contracts except that the facsimile signature of such officers to the coupons may be lithographed or engraved.

Source: SL 1899, ch 51 , § 2; RPolC 1903, § 1386; SL 1905, ch 155 , § 3; RC 1919, § 6431; SDC 1939, § 45.2308.