Antique Folding Monocular Telescope — Brass Pocket Spyglass with Leather Case

Discover a compact collector’s piece with this antique folding monocular — a brass pocket telescope housed in an engraved, fold-flat body and preserved with its stitched leather case. Designed for portability, the instrument telescopes open with a smooth sliding action and locks into viewing position; when folded it tucks safely inside the fitted leather pouch, making it a practical example of historic field optics engineering. The brass housing shows natural age patina and delicate engraved detailing, lending the piece authentic vintage appeal. Use it as a distinctive desk accent, a nautical display prop, or as part of a vintage optics collection — it also makes a memorable gift for maritime enthusiasts or history buffs.