Dating to the Art Deco period of the 1930s–1940s, this rare Zenith Tank features a 24 × 34.5 mm rectangular (tank-form) steel case and a fully mechanical hand-wound Zenith calibre, offering hour, minute, and a small seconds complication positioned at 6 o’clock—faithfully reflecting the technical and aesthetic codes of its era; the two-level (stepped) dial architecture, applied Arabic numerals, railroad minute track, and the natural, unrestored patina accumulated over decades greatly enhance the watch’s originality and collectability, while its compact proportions (excluding the crown) ensure an exceptionally balanced and elegant presence on the wrist; fitted with a mineral crystal and a newly installed genuine leather strap, and running properly while keeping accurate time, this piece is suitable for daily wear yet stands out as a true vintage Zenith distinguished by its Art Deco lines, symmetrical dial layout, and strong period character, making it a highly desirable example for collectors thanks to its rare tank form and preserved originality.