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细节
Stereoscope
Negretti & Zambra, London; the boxform stereoscope with hinged top and back, rack and pinion focusing viewing lenses, on a brass column, on a cast base modelled as the three graces
Negretti & Zambra, London; the boxform stereoscope with hinged top and back, rack and pinion focusing viewing lenses, on a brass column, on a cast base modelled as the three graces