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Corum Onyx Tank - 18K Yellow Gold

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Details

Stone, Gold, And Classic Form

During the 1970s, Corum carved out a niche by focusing on expressive design and the use of unconventional materials. This watch is a perfect product of that era, combining the timeless elegance of a yellow gold tank case with the deep, uniform black of a natural onyx dial. It is a piece that prioritizes aesthetic purity and material contrast over complex mechanics, representing a more artistic approach to watchmaking.

A Study In Restrained Detail

What sets this example apart is its clean execution and thoughtful details. The onyx dial serves as a minimalist canvas, punctuated only by four corner-set diamonds that act as hour markers. Simple gold dauphine hands track the time without disrupting the dial's clean surface. Paired with its original leather strap and signed 18k gold buckle, this watch presents as a complete and correct piece, showcasing the design as it was originally intended.

Untouched And Well Preserved

This watch is in great cosmetic and untouched condition. The onyx dial is clean and flawless, free from any scratches or marks. The crystal is similarly clear. All parts of the watch are original, including the crown, caseback, dial, and movement, and the caseback retains its factory hallmark. As with every watch we offer, this piece has been verified as mechanically sound and is ready to wear.

The Ritual Of Winding

This is a watch for someone who appreciates the quiet confidence of a design-forward vintage piece. As a manual-wind watch, it requires a daily interaction that creates a unique bond between the owner and the object. The ritual of winding the crown each morning is a physical connection to the art of traditional watchmaking. It wears elegantly on the wrist, offering a sophisticated alternative to more common brands, and works for anyone who values classic form and rare materials.

Key Specs

Reference: 27538

Model: Onyx Tank

Year: 1970s

Movement: Manual Wind

Case Size: 26x28mm

Bezel: 18K Yellow Gold

Strap: Original Leather Strap

Dial: Onyx with Diamonds

Metal: 18K Yellow Gold

SKU: 117

History

Corum was founded in 1955 in La Chaux‑de‑Fonds by René Bannwart and his uncle Gaston Ries, who chose the name from the Latin “quorum” to signify decision‑making power .  The first Corum watches appeared in 1956, and in 1966 René’s son Jean‑René joined the firm, steering it toward avant‑garde designs .  From the beginning, Corum distinguished itself by producing distinctive watches that combined technical ingenuity with visual flair.  Notable early models include the Golden Tube of 1957, which used a sliding gold case , and the Chinese Hat of 1958.  The brand also gained attention with the first Admiral’s Cup watch in 1960, featuring a square case and engraved sailboat .

Over the following decades Corum continued to innovate.  The Coin Watch of 1964 placed a movement inside a hollowed‑out $20 gold coin .  In 1980 Corum introduced the Golden Bridge, a watch whose baguette‑shaped movement was suspended within a transparent case, showcasing its hand‑engraved bridges .  The Admiral’s Cup was redesigned in 1983 with a dodecagonal bezel and nautical pennant hour markers .  These and other creations have given Corum a reputation for originality and have secured its place among independent Swiss watchmakers.

What Our Clients Say About Us

Dan Young
4 months ago

I knew I was gonna like Danny, based on his name, but nothing could’ve prepared me for how great of an experience this was. He had the most beautiful 70s Seamaster Cosmic on his website and I was set to be married 2 days later - I arranged to buy it but before leaving we both realized it needed to be serviced. I panicked, because I was literally buying this for my wedding, and Danny being the legend he is, loaned me a nearly identical Seamaster to make sure I could get through the event Never have I had someone go so above and beyond for me, especially while purchasing one of the lesser priced items in their inventory. He serviced my watch and exchanged it with me after the wedding on a super fast turnaround timeline. I would sincerely recommend you visit this guy, you will not be disappointed Edit: adding a pic of the loaner (two tone) and the owner (crosshair)

Patrick Farella
5 months ago

Great service and shop. Danny and his team were incredibly accommodating, professional, and kind. Great selection of vintage watches. Their store is the hidden gem in the diamond district.

Zee06
2 months ago

This was my first real luxury watch purchase, a Rolex 15200 Date 34mm, I own Tissots and a Laco, but those are entry level luxury watches. I found Danny’s Vintage Watches online, and had great feedback both on Google, Chrono24 and the Reddit watch community. So decided to give him a shot as buying online can be a crap shoot. Ordered Monday night, was at my doorstep Friday morning. Despite the watch being over 30 years old, serial number says it’s from 91, the watch looked new. Didn’t come with box or papers, and was shipped in a plastic sleeve wrapped in bubble wrap. Danny was always available to answer questions. I’ll be buying from Danny again for the next purchase…saw a couple of Speedmasters on his site I liked….

Mohammed Islam
4 months ago

Can't recommend Danny's vintage watches enough!!! My first Omega ever and im in love have been wearing every day since I purchased it. Danny's shop is a must visit if you are in NYC looking for a watch!!!