1) "Yost No. 1", 1887. Serial no. 4778, first model of the early American upstroke machine, "Grasshopper" typebar mechanism, marked with a pair of medallions stamped into the rear of the base, keytops damaged, mechanism resinous, rare and sought-after historical typewriter. – Literature: Martin, 1949, p. 98. (4/5) – And: 2) "Pittsburg Standard No. 11", 1908, descendant of the first fully-visible typewriter, the Daugherty, the type basket comes right out for easy changing of fonts or languages, in need of cleaning. – Literature: Martin, 1949, p. 114. (3/4)品相: (–/–)