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folding spyglass / Galilean telescope OPERA GLASSES AND SPYGLASSES folding spyglass yellow metal overall: 54 x 12 mm
Folding spyglass without barrel. Brass/gilt (?) frame. Two lenses at either end of extending bar, eyepiece lenses with tortoiseshell margins. Hinged loop handle.
folding spyglass / Galilean telescope Dollond Mid 19th c. Viewfolding spyglass / Galilean telescope Mid 19th c. View