Negretti & Zambra London Opera Glasses

A pair of late 19th- to early 20th-century opera glasses by Negretti & Zambra of London, finished in richly iridescent purple mother-of-pearl with warm brass fittings. The shell shifts from deep plum and aubergine to smoky violet depending on the light, giving the pair a jewel-like quality that feels especially luxurious against the original purple-lined fitted case.

The eyepiece is marked “Negretti & Zambra,” while the case is stamped “Negretti & Zambra London” in gilt. Negretti & Zambra was one of Britain’s leading optical and scientific-instrument firms, founded in 1850, and produced opera glasses in a range of decorative finishes throughout the Victorian and Edwardian periods.

Origin: London, England; Made in Frannce, late 19th to early 20th century, c. 1880–1910
Material: Mother-of-pearl, brass, glass optics; fitted leather case with purple textile lining
Dimensions: 2.5" L x 4" W (glasses); 3" L x 4.5" W (case)
Condition: Good antique condition with age-related patina, tarnish, rubbing, and surface wear throughout. One decorative mother-of-pearl inlay ring is missing from the surround of one eyepiece, as shown in photographs. Case shows expected wear, scuffing, and age-related wear to the exterior and lining.