Credor was founded by Seiko in 1974 as the brand for the brand's most refined dress and complication watches - sitting above Seiko, alongside Grand Seiko in the brand hierarchy but with a different positioning. Where Grand Seiko emphasises practical chronometric accuracy and the Zaratsu polishing standard for sport / dress watches, Credor was conceived as the ultra-traditional dress brand using Seiko's most ornate hand-finishing, gold and platinum cases, and elegant time-only or small-complication architectures. The Credor name comes from Crête d'Or, French for 'crest of gold'.
Through the 1970s, 80s, and 90s Credor produced refined Japanese dress watches in small numbers, building Seiko's haute-horlogerie credibility quietly. The brand reached new prominence in the 2010s with two technical statements: the Spring Drive Sonnerie (2006), a Spring Drive-powered chiming wristwatch that strikes the hours and quarters, designed and assembled by master watchmaker Yoshifusa Nakazawa; and the Eichi II (2014), a hand-finished platinum dress watch with a hand-painted porcelain dial that has become regarded as one of the most refined dress watches in the world by serious collectors of haute horlogerie.
Today Credor's flagship references are produced at the Micro Artist Studio in Shiojiri, Nagano - a small dedicated workshop within Seiko's Shinshu watchmaking facility, staffed by Nakazawa and a team of around eight master watchmakers who hand-finish and assemble each Credor flagship piece personally. Production volumes are very small (estimated low hundreds of pieces per year for the Eichi II and other flagships); retail prices range from USD 2,500 for entry quartz dress models to USD 65,000 for the Eichi II, USD 200,000+ for the Spring Drive Sonnerie, and USD 350,000+ for the GBLT minute repeater. The brand remains nearly invisible in Western retail (limited Tokyo and Seiko boutique distribution) but is highly regarded by Japanese and Asian collectors of fine watchmaking.
