Concord Delirium Ultra-Thin

Regular price: $1,495
Regular price
Sale price: $1,495
Unit price: per

REF 50.76.655

Quartz

20 MM

– Show less

SKU	AS11614
Article Number	40992874
ref	50.76.655
case size	20 MM
movement	Quartz
approximate age	1970s
dial color	Black
material	Yellow Gold
style	Dress
category	Vintage
bracelet	Leather
lug width	16 MM
Includes	Black lizard strap with Concord signed, 18K yellow gold pin buckle. Also includes hangtag.
overall condition	Outstanding condition overall. Case shows only faint signs of wear associated with gentle handling and use. Dial and handset are in excellent condition. Pin buckle is in great condition with only faint signs of wear.

Inquire about this item

REF 50.76.655

Quartz

20 MM

– Show less

SKU	AS11614
Article Number	40992874
ref	50.76.655
case size	20 MM
movement	Quartz
approximate age	1970s
dial color	Black
material	Yellow Gold
style	Dress
category	Vintage
bracelet	Leather
lug width	16 MM
Includes	Black lizard strap with Concord signed, 18K yellow gold pin buckle. Also includes hangtag.
overall condition	Outstanding condition overall. Case shows only faint signs of wear associated with gentle handling and use. Dial and handset are in excellent condition. Pin buckle is in great condition with only faint signs of wear.

Why We Love it

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There are watches that tell time, and then there are watches that tell you exactly what era they were born in.

The vintage Concord Delirium (this name!) is pure late-1970s/early-1980s Swiss defiance: a luxury object engineered less for practicality than for the headlines. Quartz had changed the rules, Japan was dominating in efficiency, and Switzerland needed to prove it could still out-design and out-build the world. The answer was thinness—taken to an almost absurd extreme.

On January 12, 1979, Ebauches SA and ETA—alongside Concord, Eterna, IWC, and Longines—announced what was then the world’s thinnest watch. Measuring just 1.98mm thick, it was powered by the remarkable ESA Cal. 999, a movement constructed directly into the caseback. It was so slim it required the world’s smallest battery at the time, and famously lacked a traditional crown, relying instead on a caseback pusher for setting.

This Delirium is from the later chapter of the story: still exceptionally slim, but designed for daily wear and a more conventional user experience. It features a crisp rectangular gold case, a glossy black dial with Roman numerals, and the discreet QUARTZ signature that defines the era. A shiny black lizard strap and the original gold Concord pin buckle with CC logo complete the look. A flash of Delirium on the wrist and the gates to Studio 54 would have automatically opened.

And perhaps the best part: the Delirium’s case-integrated movement concept directly informed the early Swatch project—initially nicknamed “Delirium Vulgare,” or “Delirium for the masses.”

A fashion watch, a technical milestone, and a tiny piece of Swiss watchmaking’s survival story.

Brand Story

Founded in 1908 in Biel/Bienne, Concord was born in the beating heart of Swiss watchmaking—surrounded by the same industrial know-how and artisanal tradition that shaped the great maisons of the 20th century. But from the start, Concord’s personality leaned less “old-world romantic” and more sleek, modern, and international.

By the late 1970s and 1980s, Concord made its name with a very particular kind of Swiss confidence: technical one-upmanship with real design appeal. The brand’s most famous chapter came with the Delirium line, a family of ultra-thin quartz watches that became a headline-making symbol of Switzerland’s fight back during the quartz crisis. These weren’t just watches—they were proof-of-concept statements, engineered to show the world the Swiss could still innovate at the sharpest edge of miniaturization.

Today, Concord sits under the umbrella of the Movado Group, the American-owned company that also acquired the storied Swiss brand Ebel. Concord remains best remembered for its bold 1980s glamour, razor-thin engineering, and a certain unapologetic, New York-meets-Switzerland energy that still feels uniquely its own.

A:S Guarantee

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 two-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

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.