1) "Martin Standard Demountable Typewriter No. 2", c. 1925, Demountable Typewriter Company, Fond du Lac, Wisconsin, serial no. 133705, typewriter with removable encasement for easy access and repairs, very rare. (2/2) – 2) "Underwood Standard No. 6", c. 1930, no. 4860852-11, four-row frontstroke machine, 84 characters. (2–3/2–3) – 3) "Royal Standard No. 6", 1914 onwards, Royal Typewriter Co., New York, serial no. 119621-6, four-row frontstroke, wide carriage. (3/2–3) – And: 4) "Smith Premier No. 2", 1895, serial no. 11786, second model of this popular American upstroke machine with full keyboard and in-built cleaning brush, carriage movement defective. – Literature: Martin, 1949, p. 109. (2–3/3–4)品相: (–/–)