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细节
A 19th-Century brass-mounted depleidoscope,
signed on the prism cover DENT Patent Meridian Instrument, 61, Strand, London. No. 38560, with iron wall mounting, overall height -- 9in. (22.8cm.)
See Illustration
signed on the prism cover DENT Patent Meridian Instrument, 61, Strand, London. No. 38560, with iron wall mounting, overall height -- 9in. (22.8cm.)
See Illustration