Bidspirit auction | A Set of Five Silver

A Set of Five Silver Gelatin Glass Lantern Slides Documenting the Diamond Industry - A set of five silver gelatin glass lantern slides illustrating various stages of the diamond production process, from extraction to final polishing. The industrial subject matter includes an underground miner operating a pneumatic drill, a selection of rough gemstones, a hand inspecting a stone with a jeweler's loupe, and two views of precision mechanical cutting and polishing equipment in use. These educational slides feature high-contrast images and clear photographic detail typical of mid-20th-century production. Each slide is housed in a standard black tape-bound mount with protective cover glass. Three of the slides feature small, circular white adhesive labels with handwritten numbers 14, 15, and 16. Dimensions: 3.25 x 4 inches. The slides exhibit minor peeling and edge wear to the black tape binding on the mounts. Surface dust, faint smudging, and light surface scratches are visible on the exterior cover glass. Visible adhesive residue is present near the numbered labels.