Mechanische Rechenmaschine "CURTA Typ1"
Black metal case, marked on the back "System Curt Herzstark Made in Lichtenstein by Contina AG Mauren, Type I No. 49835", h 10.7 cm, Ø 53 mm, original screw-on metal case, Contina Mauren 1963/64, in probably original cardboard box, with booklet "Ausführliche Beschreibung und technische Einzelheiten", three leaflets "Kurze Bedienungsanleitung", five booklets "Rechenbeispiele" and three further leaflets as well as two representative cards, all 1963/64, machine and case in very good, almost new condition, paper with traces of storage, with gear rim with riders 0149
