Zenith World Time

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REF A3634
Automatic
37 MM
– Show less
SKU AS04093
Article Number 40990109
ref A3634
case size 37 MM
movement Automatic Winding
approximate age 1960s
dial color Blue
material Stainless Steel
style Travel
category Vintage
bracelet Rubber
lug width 18 MM
Includes Includes black Tropic rubber strap with signed steel pin buckle.
overall condition The case is in excellent condition overall, showing light wear from age and use. Luminous sunburst blue luminous dial is in outstanding condition with evenly patinated indices and matching handset. Professionally matched seconds hand. Signed crown.
REF A3634
Automatic
37 MM
– Show less
SKU AS04093
Article Number 40990109
ref A3634
case size 37 MM
movement Automatic Winding
approximate age 1960s
dial color Blue
material Stainless Steel
style Travel
category Vintage
bracelet Rubber
lug width 18 MM
Includes Includes black Tropic rubber strap with signed steel pin buckle.
overall condition The case is in excellent condition overall, showing light wear from age and use. Luminous sunburst blue luminous dial is in outstanding condition with evenly patinated indices and matching handset. Professionally matched seconds hand. Signed crown.

Why We Love it

Zenith, while not a household name, is certainly a known name in the world of watches - particularly in collecting circles. The primary reason?

The El Primero.

In icon of this caliber tends to have some side effects for its name brand - in this case - other models from the era in Zeniths line up perhaps not getting the recognition that the deserve - leaving plenty of forgotten gems in the brands past.

One such example is this Reference A3634 world timer. This incredibly cool piece features a lovely sunburst blue dial with tritium indices and matching handset, a sporty 37mm case, and a bidirectionally rotating world-time bezel. 

The A3634 may not be an icon - yet - but it absolutely sums up what we love about vintage, particularly lesser-known vintage timepieces that we have become known for. 

Don't miss it!

Brand Story

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Georges Favre-Jacot began producing pocket watches in Le Locle at the age of twenty-two. By the turn of the 20th century, Favre-Jacot was producing marine chronometers and chronometer-grade movements, one of which won a chronometry competition in Neuchâtel in 1903. Under the name Zenith, formally established in 1911, Favre-Jacot expanded his production to include wristwatches.
Zenith's chronographs in particular gained a reputation for excellence. At first Zenith used Excelsior Park and Valjoux movements, sharing them with Universal Genève and Movado (with which Zenith would merge for a time in 1969). By the 1960s Zenith acquired ébauche manufacturer Martel and began using their movements exclusively, leading to lauded calibers such as the 146HP and 146DP, which launched in 1969.
1969 was a banner year for horology, as it saw the launch of the first automatic chronograph movement. This was a race between a team consisting of Hamilton, Heuer, Buren, Dubois-Depraz, and Breitling; Seiko; and Zenith. Zenith used the Caliber 146 as a basis for the caliber which the brand would dub "El Primero" — "the first." Of the consortium’s Caliber 11, Seiko’s reference 6139, and the El Primero, only the latter feature a “high-beat” movement for increased accuracy.
Zenith ceased using manually-wound movements in their chronographs after the introduction of the El Primero — however, then the Quartz Crisis of the 1970s hit, and the company was sold. Employees were ordered to destroy or otherwise liquidate their mechanical watchmaking tooling, but incredibly, one daring engineer, Charles Vermot, decided to hide machinery behind a false wall that he built himself in the attic of the company’s manufacture in Le Locle. He told no one about what he was doing — not even his family.

Then, in the 1980s after the company had changed hands once again, he led modern Zenith management to this secret cache of horological wonders, in which the El Primero tooling was hidden. Ebel placed the first modern order for El Primero movements in 1984, but it was Rolex, who ordered thousands of calibers to power their new automatic Daytonas, that saved the firm. Today, the El Primero powers numerous vintage-inspired chronographs as well as the new Chronomaster Sport, a watch aimed as a competitor at — with much irony — the Daytona.

A:S Guarantee

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Our Pledge

Analog:Shift stands behind the authenticity of our products in perpetuity.

Condition

Since our pieces are vintage or pre-owned, please expect wear & patina from usage and age. Please read each item description and examine all product images.

Warranty

We back each Analog:Shift vintage timepiece with a one-year mechanical warranty from the date of purchase.

International Buyers

Please contact us prior to purchase for additional details on shipping and payment options.

Shipping & Returns

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All of our watches include complementary insured shipping within the 50 states.

Most of our products are on hand and will ship directly from our headquarters in New York City. In some cases, watches will be shipped directly from one of our authorized partners.

We generally ship our products via FedEx, fully insured, within 5 business days of purchase. An adult signature is required for receipt of all packages for insurance purposes. Expedited shipping is available at an additional cost. We are also happy to hand deliver your purchase in Manhattan or you may pick it up at our showroom.

Returns must be sent overnight or by priority international delivery, fully insured and paid for by the customer. A restocking fee may apply. Watches must be returned in the same condition as initially shipped.

We welcome international buyers, please contact us prior to purchase for additional details on shipping and payment options.

Make it yours will fit standard 18mm watches

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Zenith World Time

Zenith World Time

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Zenith World Time

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