From Zenith, one of the most deeply rooted and highly respected brands in Swiss watchmaking history, this is an exceptionally rare automatic model from the Zenitissimo series, standing out with its extraordinary contours and noble design. Combining a classic "Tank" shaped steel case with a mesmerizing blue dial design, it pairs beautifully with both daily smart-casual wear and formal suits, making it a vintage timepiece of high collector's value. ​Technical Specifications ​Brand / Model: Zenith Zenitissimo Automatic (Vintage) ​Movement: Powered by an original Swiss-made, 25-jewel (25 Jewels) automatic Zenith movement in high condition. This exceptionally clean and highly engineered mechanical movement, bearing the inscriptions "Zenith - Swiss Made - 25 Jewels," serves as the heart of the timepiece and is showcased in full detail in ​Case Dimensions: Approximately 30 x 34 mm including the winding crown (approximately 28 x 34 mm excluding the crown). Thanks to its ergonomic and slim profile in a square/Tank geometry, it delivers an incredibly noble, elegant, and comfortable dress watch presence on the wrist . The right and left profile silhouettes of the case can be inspected in images respectively. ​Case Structure: Crafted entirely from high-quality stainless steel. The brushed finish on the top surface and the polished side profile lines preserve their period condition in very clean form. It retains its original steel winding crown adorned with the Zenith logo. ​Caseback: Original stainless steel caseback structure. The case serial number 781D348 is clearly and cleanly legible on the outer surface The inner side bears the original "Acier Inoxydable - Zenith - Swiss Made" hallmarks certifying Zenith's manufacturing quality ​Dial and Hands: A beautiful original blue dial in excellent condition, featuring a silver-colored circular track with Roman numerals (sector dial style) at its center The dial features the "Zenith - automatic" emblem along with the series signature "Zenitissimo" inscription. The minimalist slender hands offer immense elegance and aesthetic appeal alongside this special dial configuration. ​Condition Details ​Operational Status: The 25-jewel automatic movement operates fluidly, accurately, and stably. Timekeeping is flawless by vintage standards ​Strap & Accessories: To achieve a perfect visual harmony with the dial color, the watch has been fitted with a brand-new blue leather strap featuring an alligator/lizard skin texture and an 18 mm lug width ​Please Note: This timepiece beautifully reflects its original period condition and vintage spirit, standing as a collector's item in rarely found cleanliness. Due to its antique nature, no water resistance warranty is provided. For cross-border or international shipments, any potential customs duties, taxes, or additional clearance fees are entirely the responsibility of the buyer. Please review all macro photos carefully before finalizing your purchase.