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  5. French Market Chronograph 'Calibre 321'
Pre-Owned Omega French Market Chronograph 'Calibre 321'
Pre-Owned Omega French Market Chronograph 'Calibre 321'
Pre-Owned Omega French Market Chronograph 'Calibre 321'
Pre-Owned Omega French Market Chronograph 'Calibre 321'
Pre-Owned Omega French Market Chronograph 'Calibre 321'
Pre-Owned Omega French Market Chronograph 'Calibre 321'
Pre-Owned Omega French Market Chronograph 'Calibre 321'
Pre-Owned Omega French Market Chronograph 'Calibre 321'
Pre-Owned Omega French Market Chronograph 'Calibre 321'
Pre-Owned Omega French Market Chronograph 'Calibre 321'
Pre-Owned Omega French Market Chronograph 'Calibre 321'
Pre-Owned Omega French Market Chronograph 'Calibre 321'

Pre-Owned Omega French Market Chronograph 'Calibre 321' 40960337 AS11520

$8,500.00  Delivery for this product is estimated at 1-2 Business Days

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For more details on this product, please contact 1-800-462-9677, Website Catalog or click here for live assistance.
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Description

Ask any seasoned collector to name the greatest chronograph movement ever built, and odds are they'll whisper—almost reverently—321. Designed by the gifted Albert Piguet for Lemania, the Calibre 321 was a child of the 1940s that would later become a titan of the Space Age, powering the earliest OMEGA Speedmasters worn during NASA's most daring missions. But before it became the stuff of lunar lore, this movement lived a quieter, more elegant life in refined chronographs like this one: a French-market treasure that blends haute horlogerie pedigree with old-world charm.

Lemania's long partnership with OMEGA—formalized in 1932 under the SSIH banner—produced a generation of chronograph calibers that reshaped modern watchmaking. The 321, known internally as the CH27, was the crown jewel: a crisp, column-wheel masterpiece that found its way into tool watches, dress chronographs, and everything in between. And while Speedmasters get most of the glory, these earlier gold-cased, European-delivered examples reveal the movement's more refined side: thinner cases, warmer metals, and dials that dance between utility and understatement.

This particular example is a beautifully preserved study in mid-century elegance. The 35mm 18K rose gold case—French-market hallmarks intact—frames a sober, well-preserved silvered dial marked by its characteristic Fab. Suisse script and a French tachymètre scale. Triangular indexes reinforce the case's strict, architectural lines, while gold 'feuille' hands float above stepped registers with effortless grace.   

Inside beats the legendary Calibre 321—the very movement used in the early pre-moon Speedmasters and still regarded as one of the finest chronograph calibers ever produced. It's presented on a brown alligator strap with a matching gold pin buckle for a quietly luxurious finishing touch.

A Speedmaster may have gone to the moon—but pieces like this are what true connoisseurs hunt for on earth.

Delivery & Returns

Standard Delivery (Est 1-3 Days) - Free

Our secure shipping service delivers Monday - Saturday between 8:00 a.m. and 6:00 p.m. For security purposes, every delivery requires an adult signature; Mayors does not deliver to P.O. boxes nor third party forwarding services. To find out more about delivery, click here. Tracking information is available upon request.

If you have any questions or concerns regarding your order, Mayors’ E-Commerce team can be reached at 1-800-4-MAYORS (1-800-462-9677), option 1, during the following times (Eastern Time):

- Monday - Saturday: 9:00 a.m. – 7:00 p.m

- Sunday: 9:00 a.m. – 5:00 p.m

- Closed Easter Sunday, Thanksgiving Day and Christmas day

Alternatively, you can email the E-commerce team at ecommerce@mayors.com.

Return Policy

Our commitment to you does not end at delivery. We offer the following return services to make your experience as pleasant as possible.

10-Day Returns For Timepieces:

Timepieces purchased online can be returned or exchanged within 10 days from when they are shipped or collected.

30-Day Returns For All Other Purchases:

All other online purchases can be returned or exchanged within 30 days from when they are shipped or collected.

On presentation of the original receipt, your purchases may be returned or exchanged at any of our store locations. Alternatively, you may elect shipping to our facility with all the original paperwork. All refunds must be credited to the same tender used for the original purchase. To return the online purchases through secure shipping service, please contact our client service team who will provide you the shipping label.

All returns or exchanges must be in new, unworn condition, with no scratches or markings, not sized or adjusted and in their original packaging and with warranty cards / certificated and instruction booklets.

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