Negretti & Zambra London – antique opera glasses / theatre binoculars – leather and metal – circa 1900 An elegant pair of antique opera glasses by the renowned London maker Negretti & Zambra, a firm internationally respected for its high-quality scientific and optical instruments. Dating to the late 19th or early 20th century, this finely crafted piece combines a refined metal structure with original brown leather coverings, creating a timeless and sophisticated appearance typical of the period. The proportions and materials reflect the quality and craftsmanship associated with Victorian-era optical devices. The eyepieces retain traces of the maker’s marking, and the central focusing mechanism is present and complete. The binoculars display an attractive, authentic patina developed over time, enhancing their antique character. The condition is consistent with age and use, with visible wear to the leather and eyepieces, as well as light internal dust typical for instruments of this period. Overall, this is a highly decorative and collectible example of early optical craftsmanship, equally suitable for display or collection.