Zenith Early Automatic Bumper Jumbo Cal. 133.8 – A Rare 1950s Classic
A striking example of early automatic watchmaking, the Zenith Early Automatic Bumper Jumbo Cal. 133.8 is a rare and highly desirable piece from the 1950s. Featuring an uncommon ‘egg’ dial with a unique 3D effect, this watch stands out as an exceptional collector’s piece, blending innovative design with robust mechanics.
Unique Design & Impressive Presence
Measuring an impressive 36mm, this Zenith is considered large for its era, offering a bold wrist presence. The dial, reminiscent of an egg in both color and texture, features a central ‘egg bubble’ that creates a striking 3D visual effect. The combination of gold-toned indices and hands ensures excellent legibility while enhancing its vintage charm.
The two-tone case, crafted from a mix of gold and steel, retains its sharp lines and features a screw-back design for added durability. The original signed Zenith crown remains intact, though it shows some wear, a testament to its age and authenticity.
Mechanical Excellence – Zenith Calibre 133.8
Inside this timepiece beats the renowned Zenith Calibre 133.8, an early automatic bumper movement known for its smooth operation and high-quality finishing. The movement functions flawlessly, demonstrating Zenith’s commitment to precision and longevity.
Built to Last – A Watch That Stood the Test of Time
The waterproof screw-back case design has helped preserve the integrity of this timepiece over the decades. Despite its age, it remains in lovely condition, with all key components original and well-preserved.
Specifications:
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Case Material: Gold/Steel
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Case Size: 36mm
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Movement: Zenith Calibre 133.8 Automatic Bumper
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Dial: Unique ‘Egg’ design with central 3D bubble
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Crown: Original signed Zenith (shows some wear)
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Case Back: Waterproof screw-back design
Why This Watch?
The Zenith Early Automatic Bumper Jumbo is an extraordinary vintage timepiece, boasting a distinctive dial, a large-for-its-time case, and a beautifully finished early automatic movement. With its blend of rarity, craftsmanship, and character, this watch is a superb addition to any collection—offered at a very fair price for such a unique and historical piece.
