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Seiko Credor GCLL997 Spring Drive Moonphase

Seiko Credor GCLL997 Spring Drive Moonphase

Regular price £4,950.00 GBP
Regular price Sale price £4,950.00 GBP
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Model: Seiko Credor GCLL997 / 5R77-0AA0

Year: June 2005

Features:

The Look. The GCLL997 on offer today takes a more traditional approach to the moonphase complication - but with the sort of Credor twist I love. And while the overall look is undeniably minimalist, there are a few subtle details that could easily be missed.

The Design. The façade of the watch is impressively texture-forward. The entire dial carries a fine silver sunburst finish, while four hand-polished indices sit atop a raised outer ridge. The central subsection houses the applied yama (山) crest and a power-reserve indicator that straddles both levels. The indicator itself is double-recessed and framed in a metal trim - not the sort of detail you’ll notice until it twinkles at you in the sunlight. 

The Moon. And then there’s the moonphase. A perfectly executed mother-of-pearl moon glides through a sunken aperture, shifting between silver, green, blue, and purple based on your viewing angle. Alongside the blued hands, it’s the only splash of colour on the entire watch - and neither element falters under that pressure.

The Complication. Despite Grand Seiko’s broad catalogue, they’ve never been blessed with the Moonphase Spring Drive - that sole honour belongs to Credor (and one Seiko branded watch). While the movement isn’t technically retired, it’s been almost ten years since the last moonphase release - I’m hoping 2026 will add a new one to Credor’s lineup. 

The Balance. It strikes a masterful balance. Its Moonphase and Power Reserve indicators are tastefully understated, ensuring the twinkling, zaratsu-polished indices, hands, and case remain the stars of the show. 

Condition: In great condition. Just serviced by Credor. No noticeable marks of any significance. Full box and papers. 

Scope: Box and papers (and service papers)

Movement: 5R77 Spring Drive 

Dimensions:

  • Case Width: 40.8mm
  • Lug to lug: 47.1mm
  • Case Thickness: 13.1mm
  • Bracelet: Fits up to a 7.5 inch wrist
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FAQs

Do you ship globally?

Absolutely - our watches are regularly shipped all over the world. Shipping typically takes:

  • 4-9 business days to reach North America
  • 4-12 business days to reach Europe
  • 4-12 business days to reach Asia and Oceania.

All of our packages are securely shipped, fully insured, and trackable door-to-door.

Do I have to pay customs or taxes?

It depends on so many factors, including but not limited to; the cost of the watch, the type of watch you've bought (vintage, new, or modified), and the import and tax laws of your country. If you're unsure we recommend checking the import laws that relate to your country before ordering.

Are your watches water resistant?

All of our watch mods are tested by our own pressure depth testing equipment, and are guaranteed to resistant water up to 50m of depth. Seiko Originals have varied levels of depth resistance, which will be stated in the description of each watch.

Can I modify an existing design?

We welcome all ideas! Get in touch via the Contact Us page and we can let you know the possibility and cost of any potential alterations.

What is your returns policy?

Due to the hand-made nature of the Seiko Mods, we offer a 7 day returns period after the watch has been received. The returner must bear the cost of the returns, and the watch must be returned in the same condition as it arrived. We do not offer returns on any bespoke or custom-made watches.

Due to the vintage nature of the Seiko Originals, returns are considered on a case-by-case basis, as vintage items typically have a no returns policy.