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細節
Mechanical slides
Two wood-mounted hand-cranked slides, one kaleidoscopic, the mount stamped W. E. & F. NEWTON; the other showing a watermill, the mount stamped NEWTON (2)
Two wood-mounted hand-cranked slides, one kaleidoscopic, the mount stamped W. E. & F. NEWTON; the other showing a watermill, the mount stamped NEWTON (2)