Now available at auction from Second Vintage This 1950s Zenith presents a sought-after vintage configuration, distinguished by its heavily patinated dial and historically significant Caliber 71 bumper automatic movement. The distinctive surface spotting across the dial gives this timepiece a unique, aged character, complemented by a well-preserved stainless steel case and its original signed star crown. Brand: Zenith Model: Zenith Automatic Reference Number: 9303933 Serial Number: 4690547 Movement: Automatic, Caliber 71, 20 Jewels Dial: Heavily patinated with significant surface spotting and a date window at 3 o'clock Case Size: 35mm (excluding the crown) Case Material: Stainless steel Production Year: 1950s Condition: Good vintage condition. Timegrapher: +50+54s/day, running in operational condition. Dial and Hands The dial exhibits heavy, uniform spotting and patina across its entire surface, presenting a highly distinctive and heavily aged character. The applied indices and Zenith star logo show light oxidation, while the printed text remains fully legible despite the surface degradation. A well-placed date window sits at the 3 o'clock position. The dauphine style hands display visible oxidation and spotting that age consistently with the dial, showing no severe corrosion or deformation. Case and Crystal The 35mm stainless steel case offers honest vintage wear with well-preserved geometry, retaining good shape and definition across the lugs. Moderate surface scratches and handling marks are visible throughout the case and the smooth stainless steel bezel. The caseback engravings remain clear and legible. The watch is fitted with its original signed Zenith star crown, which features well-defined knurling and minor wear. The domed acrylic crystal is clear, showing minor surface scratches with no visible cracks or deep chips. Movement Inside is the Zenith Caliber 71 bumper automatic winding mechanism, featuring 20 jewels. The plates and bridges are generally clean, showing light superficial scratches with no severe corrosion or obvious damage visible. The Caliber 71 stamp is clearly legible near the balance wheel. +50+54s/day. Running in operational condition. Maintains the authentic mechanical character of the watch. Strap The watch is paired with a complementary black leather strap featuring contrasting white stitching. The strap shows light wear and appears relatively new. Condition Good vintage condition. The heavily patinated dial and dauphine hands show significant, uniform aging and oxidation. The stainless steel case and bezel display moderate surface scratches and handling marks, while retaining good lug geometry and clear caseback engravings. The domed acrylic crystal has minor surface scratches. The movement plates are generally clean with light superficial wear. +50+54s/day. Running in operational condition. Maintains the authentic mechanical character of the watch. Dimensions The case measures 35mm (excluding the crown). Remarks This Zenith stands out for its historically interesting Caliber 71 bumper automatic movement and original signed star crown. The distinctive heavy patina across the dial ensures this well-preserved stainless steel watch possesses an entirely unique visual presence on the wrist. History Early Zenith bumper automatic movements like the Caliber 71 are appreciated by collectors for their historical significance and distinct mechanical feel. Produced during the 1950s, these mechanisms represent a fascinating transitional era in horology, bridging the gap between manual-wind calibers and the modern full-rotor automatic movements that would eventually become the industry standard. Payment and Shipping Payment must be completed within 1–3 days after purchase. Your watch will be professionally and securely packaged, then shipped with tracking and insurance for your peace of mind. We use fast express shipping, with typical delivery within 1–4 business days, depending on the destination. Please note that vintage watches may show minor signs of wear, aging, or imperfections, which are considered normal for watches of this age. We kindly ask you to review all photos carefully before bidding. We photograph each watch from multiple angles to provide the most accurate representation possible, and the photos form an important part of the description. The timegrapher assessment if provided is seen as an indication of the movement’s condition under fully wound testing conditions. As with all vintage watches, results may vary in daily use. If you have any concerns regarding functionality or defects after delivery, please contact us within 3 days of receiving the watch so we can assist you. As with all used watches, water resistance is not guaranteed. If you have any questions, feel free to contact us after the auction ends. / Second Vintage SKU: ZEN-AXX-0001