Seiko Credor GCLL999 Spring Drive Moonphase

Model: Seiko Credor GCLL999 / 5R77-0AA0

Year: February 2006

Features:

The Design. Blue and silver. It’s practically a cheat code for creating a sleek and distinguished watch. Add a mother-of-pearl Moonphase indicator and the smooth sweep of a Spring Drive, and you've got an archetypal neo-vintage Credor.

The Dial. The façade of the watch is impressively texture-forward. The entire dial carries a blue 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 Moon. The moonphase indicator is double-recessed and framed by a metal trim - not the sort of detail you’ll notice until it twinkles at you in the sunlight. Thanks to the mother-of-pearl disc, the moon shifts between silver, green, blue, and purple based on your viewing angle. 

The Complication. Despite Grand Seiko’s broad catalogue, the brand has never been blessed with the Moonphase Spring Drive - that sole honour belongs to Credor (and one Seiko branded watch). Not only that, but the 5R77 calibre solves a complaint commonly levied against Grand Seiko. Date windows. While I’m not opposed to their inclusion, I understand the issue - Spring Drives exude elegance, and date windows can feel jarringly intrusive. 

The Balance. The GCLL999 strikes a masterful balance. Its Moonphase and Power Reserve indicators not only balance the dial but are also tastefully understated, ensuring the Zaratsu-polished indices, hands, and case remain the stars of the show.

Specifications:

Condition: In very good condition overall. The watch itself is in great condition, with the only visible marks being on the caseback. The bracelet, however, shows various signs of wear. 

Scope: No box or papers

Movement: 5R77 Spring Drive

Dimensions:

• Case Width: 41.0mm
• Lug to lug: 48.0mm
• Case Thickness: 13.1mm
  
• Bracelet: Fits up to a 7.2 inch wrist