A RARE 19TH-CENTURY PAIR OF SILVER TELESCOPIC OPERA GLASSES,

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A RARE 19TH-CENTURY PAIR OF SILVER TELESCOPIC OPERA GLASSES,
SIGNED ON THE EYEPIECE SURROUNDS LUNETTE BAUTAIN AND STAMPED B.C. WITHIN A LOZENGE, THE TELESCOPIC ACTION OPERATED BY AN INGENIOUS MECHANISM OF FOLDING RACK AND PINION GUIDES FOR THE SILK-COVERED TELESCOPIC BELLOWS WITH IVORY SCREW ADJUSTER, WITH FOLDING IVORY HANDLE, IN THE ORIGINAL SILK-LINED SHAPED LEATHER-COVERED CASE -- 4.7/8IN. (12.4CM.) WIDE

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