Otsuka Lotec No.6 Watch, Retrograde Fan Display, Stainless Steel, 42.6 mm, Automatic, Unworn
Otsuka Lotec No.6 Watch, Retrograde Fan Display, Stainless Steel, 42.6 mm, Automatic, Unworn
Previously in the house
This piece has found its home
Its photographs and the Japonista Reading remain here for reference. Should you wish for another of its kind, the house will watch for one and offer it to you first.
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An unworn Otsuka Lotec No.6 in stainless steel, with a fan-shaped retrograde display, a central seconds disc and a date window, bought in January 2026 and complete with its box and warranty card.
The Piece
Otsuka Lotec is the independent Japanese watch brand of Jiro Katayama, known for its retrograde and jumping-hour displays.
The No.6 shows the hour and the minute on a fan-shaped scale, with both hands set on one axis and snapping back to zero at the end of their sweep. A seconds disc turns at the centre, and the date sits to the right, all beneath a sapphire crystal in a bolted steel case.
The case is 42.6 mm (1.68 in) across and 11.8 mm (0.46 in) thick, driven by a Miyota 9015 automatic movement with a module made by the maker. It is unworn, and comes with its box, warranty card and booklet.
Details
- Maker: Otsuka Lotec
- Model: No.6
- Material: 316L stainless steel case; sapphire crystal; black leather strap
- Movement: Miyota 9015 automatic with an Otsuka Lotec module, 40 hours power reserve
- Measurements: Case 42.6 mm (1.68 in) across; thickness 11.8 mm (0.46 in)
- Colour: Steel; silver dial; black strap
- Origin: Made in Japan
- Included: Box; warranty card; booklet
Condition
- Grade S in Japan: unused, with no marks from use.
- The watch is unworn and has been photographed only to show it with its papers and box.
Condition grade S (unused) on the Japanese scale; see Japanese condition ranks, explained.
Authenticity & Care
Case and caseback engravings, dial printing, movement, crown and bracelet are examined together and documented in Japan before dispatch. Every piece carries the Japonista authenticity guarantee. Keep it away from magnets and damp, and have it serviced by a qualified watchmaker before regular wear.
Delivery from Japan
Packed by hand in Japan and shipped insured and tracked by EMS or an equivalent express service. Import duties and taxes, where applicable, are payable on arrival. Every sale is final; please ask anything before you buy, and see our published policy.
Considered offers are welcome through Send an Offer, and each one is reviewed personally. Pieces over $1,000 may be reserved over several payments with Layaway Privilege™.
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Collectors also search: Otsuka Lotec No.6 · Otsuka Lotec retrograde watch · Otsuka Lotec fan display · Otsuka Lowtech 6 watch · Jiro Katayama watch
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