Bidspirit auction | 2 opera glasses and 1

2 opera glasses and 1 monocular, 19th - 2 opera glasses and 1 monocular, 19th century One opera glass, brass with mother-of-pearl overlay, approx. 11 x 7 cm. One opera glass in leather case, brass gilt, monogram engraving with date ''11.8.(18)88'', with celluloid cover, 2 cracks. One monocular in round leather case (rubbed), brass with celluloid cover, approx. 10 cm when extended. All with largely clear field of vision.