David Abraham - 盲人用全機械式点字タイプライター - タイプライター - 1930-1940

David Abraham’s Perkins Brailler, a full-mechanical Braille writing machine from Watertown, USA, dating to 1930–1940, constructed of metal with a hammered finish, 41 cm wide by 16.5 cm high by 28 cm deep, weighing about 6 kg, shown in good used condition with minor signs of age and working order intact, and supplied with an original case whose locks are defective.