66 Years Old / Zenith Sporto / Vintage 1960 Watch / Cal. 40 / Transparent Inner Dust Cover / Serviced
66 Years Old / Zenith Sporto / Vintage 1960 Watch / Cal. 40 / Transparent Inner Dust Cover / Serviced
EVW PRODUCT NR: 726-3,2
You save 369,00 EUR right away
The service and identification document is included in the price.
The Zenith Sporto line represents the manufacture’s post-war approach to creating dependable, practical and well-engineered everyday wristwatches. This particular example dates to circa 1960, based on the available internal movement serial tables, and retains an original dial, original crown and a classically proportioned stainless-steel case.
Its understated dial combines applied gold-tone hour markers and Arabic numerals with a subsidiary seconds register at 6 o’clock. The 34 mm case size was entirely appropriate for a men’s wristwatch of the period and gives the watch balanced, authentic mid-century proportions.
One of the most interesting features of this Sporto is hidden beneath its solid steel case back. The movement is protected by a separate transparent acrylic inner dust cover, sometimes described as a glazed inner cuvette. This additional cover formed a second protective barrier around the mechanism, helping to reduce the ingress of dust and incidental moisture while still allowing the movement to remain visible once the outer metal back was removed.
This unusual construction is a fascinating example of mid-20th-century case engineering. It may be regarded as an early conceptual relative of the modern exhibition case back, although its original purpose was primarily protective rather than decorative.
The watch is powered by the manually wound Zenith Caliber 40, fitted with 17 jewels and a traditional small-seconds display. The Sporto was not a professional sports watch in the modern sense, but rather a robust and versatile daily timepiece that combined practical protection with the precision-focused watchmaking culture for which Zenith had already become known.
While the Caliber 40 was not a direct technical predecessor of later Zenith icons such as the El Primero, Defy or Chronomaster, this Sporto reflects the same broader manufacture philosophy: reliable mechanical engineering, functional design and a sustained pursuit of accurate timekeeping.
This watch was last serviced on 03-07-2026.
Brand and model: Zenith Sporto
Reference: Unknown
Case material: Steel
Case size: 34 mm
Lug-to-lug: 41 mm
Thickness: 10 mm
Dial: Original
Crystal: Acrylic (period-correct)
Crown: Original
Strap or bracelet: Calf leather strap
Movement type: Manual
Caliber: 40
Jewels: 17
Movement serial masked: 5039••••
Water resistance: Splash Water Resistant (handwashing ok, not showering)
📦 What’s Included
Box/Case: Secure black travel watch case.
Documents: Invoice and our service certificate worth €369 — included free of charge
🚚 Shipping, Returns
Insured worldwide shipping. 14-day inspection (unused, seals intact). Pro packing with tracking.
🛎️ Call-to-Action
Questions or an offer? Click “Negotiate Your Price.” Serious collector inquiries welcome.
🔧 Included Service Benefits
💰 If you ever decide to sell the watch, a documented service will significantly enhance its market appeal and resale value.
🛠️ A professional service worth €369 — included free of charge.
The service includes:
- Full disassembly, ultrasonic cleaning, and lubrication using Moebius synthetic oils
- Regulation and timing adjustment
- Ultrasonic case and bracelet cleaning (if applicable)
- Final technical & aesthetic inspection
📄 An official service certificate is provided, listing key technical and identifying details — ideal for insurance, provenance, or future resale.
🛡️ This ensures peace of mind and removes the need for servicing for the next 3–5 years.
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