Finding a numbered anniversary chronograph on the secondary market is no small feat, especially one as captivating as OMEGA’s ref. 311.63.40.30.02.001. Built to honor the first Omega worn in space, this model swaps traditional steel for proprietary 18K Sedna gold, blending copper and palladium to preserve its deep hue against long-term tarnishing. The straight-lug case measures 39.7mm across, offering a noticeably trim fit that sits far more comfortably than typical 42mm Speedmasters. Brown subdials and a matching ceramic bezel outline the opaline silver dial, while an engraved caseback tracks its place within a numbered anniversary edition.
This Speedmaster operates on the trusted manual-wind Caliber 1861, a robust engine proven through NASA’s rigorous flight tests, delivering a dependable 48-hour power reserve alongside fine precious metal craftsmanship.
Offered pre-owned, this Omega Speedmaster First OMEGA in Space Sedna Gold Watch 311.63.40.30.02.001 comes with its official paperwork and the manufacturer’s box.
Most watchmakers settle for simple painted discs, but Omega took a far more technical route with the Speedmaster 304.33.44.52.01.001. Its high-definition metallic crystal wheel carries two photographic moons on opposite sides of the disc, reproducing lunar surface detail at remarkable resolution. Under high magnification, the surface even reveals Buzz Aldrin’s famous bootprint.
That intricate display sits within a black dial framed by a 44.25mm steel case, ceramic tachymeter bezel, and twin sub-dials. Running on the METAS-certified Co-Axial Caliber 9904, it backs up its visual impact with 15,000 gauss antimagnetic protection and a 60-hour power reserve.
This is a pre-owned Omega Speedmaster Moon Phase Steel on Leather Watch 304.33.44.52.01.001. It comes with its official paperwork and the manufacturer’s box.
Sought after specifically for its DON bezel, reference 310.32.42.50.01.001 revives a cherished mid-century hallmark by positioning the tachymeter dot directly above ninety rather than beside it. That historical detail sets the tone for a 42mm stainless steel case defined by classic asymmetrical lugs and a recessed step dial under traditional Hesalite glass. The classic layout gets a modern mechanical upgrade from the anti-magnetic, hand-wound Caliber 3861, delivering a 50-hour power reserve while preserving its flight-qualified spaceflight identity.
Offered pre-owned, this Omega Speedmaster Moonwatch Professional Chronograph Watch 310.32.42.50.01.001 comes with a secondary strap and a gift box.
Decades have passed, yet the Speedmaster remains instantly recognizable, as reference 310.30.42.50.01.001 demonstrates. Omega preserved the exact functional layout that conquered space travel, keeping the matte step dial, sloped minute track, and classic Hesalite front. The real upgrade sits inside, with the hand-wound Calibre 3861, taking the historical 1861 movement design and adding a silicon balance spring alongside METAS certification. The brushed five-arched-links-per-row bracelet completes the watch, a fitting reminder that some designs endure because they keep evolving without losing their identity.
Offered pre-owned, this Omega Speedmaster Moonwatch Professional Steel Watch 310.30.42.50.01.001 comes with its manufacturer’s box and official paperwork.
Borrowing its layout directly from vintage industrial analog meters, the Otsuka Lotec No 6 turns time measurement into an instrument panel for the wrist. Dual retrograde hands track hours and minutes along the sweeping top arc, while a rotating seconds disc sits in the center. Positioned to the right of center, a deep aperture displays the date beneath the glass. Its 316L stainless steel housing measures 42.6mm by 11.8mm, paired with a distinctively textured crown.
Produced in limited quantities, this Japanese creation brings a refreshing approach to independent watchmaking, cementing its status as a dream piece for serious collectors.
Offered pre-owned, this Otsuka Lotec No 6 Double Retrograde Steel Watch comes with its official paperwork and the manufacturer’s box.
Made exclusively for Japan, this reference presents a raw, technical alternative to conventional central-hand timekeeping. Time reading relies on a wandering satellite hour module traveling across a 120-degree arched chapter ring, paired with a small-second disc at 5:30. Stripped of a traditional bezel, its 40.5mm steel case features a circular-brushed finish, hooded lugs, and an offset knurled crown placed at 4:30. Beneath the display, the automatic Miyota 90S5 drives the proprietary wandering-hour module, beating at 28,800 vibrations per hour with approximately 40 hours of power reserve.
This is a pre-owned Otsuka Lotec No. 5 KAI Steel Watch. It comes with its official paperwork, a secondary strap, and the manufacturer’s box.
With a layout modeled on classic three-lens turret movie cameras, the Otsuka Lotec No. 7.5 stands out as unconventional through and through. The industrial face utilizes specialized lens apertures to deliver a clean, surprisingly quick time readout at a glance. Inside the 40mm stainless steel case, an automatic Miyota Calibre 82S5 paired with an in-house module drives the jumping hour, minute, and running second disks, backed by a 40-hour power reserve. Unfiltered metal surfaces highlight its raw, tool-like character, creating a pretty cool aesthetic that breaks every traditional design rule. Produced in extremely small batches by founder Jiro Katayama, securing one demands equal parts patience and luck.
Offered pre-owned, this Otsuka Lotec No. 7.5 Jumping Hour Steel Watch comes with its official paperwork and the manufacturer’s box.
The 42.6mm Otsuka Lotec No.6 offers an uncompromisingly unique approach to wrist wear. Instead of conventional rotating hands, two retrograde hands sweep across arched scales for the hours and minutes, returning to zero when they reach the end of their respective tracks. Japanese text printed across the dial adds to its unmistakable Tokyo workshop character, while the exposed screws and substantial steel case give it an industrial edge. It is the sort of unusual mechanical display that prompts a second look before anyone has even asked what time it is.
This is a pre-owned Otsuka Lotec No.6 Double Retrograde Steel Watch. It is accompanied by its manufacturer’s box, a secondary strap, and official paperwork.
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