Seiko Quartz Astron - World's First Quartz Watch Promotional Brochure

Seiko Quartz Astron - World's First Quartz Watch Promotional Brochure

On Christmas Day 1969 Seiko released the world’s first commercially available quartz watch. To explain this new technology to the public Seiko produced a dedicated brochure that highlighted the advantages and differences to a traditional mechanical watch. Here is a copy of the original brochure and a translation of it.

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Update: Credor Brand Introduction and History

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I have included a quick update to the Credor brand introduction article with changes to the Seiko 1975 Volume 1 and 1976 Volume 1 catalog sections. The update includes additional pages from the ‘75 Vol.1 catalog and the inclusion of a description page from the 1976 Volume 1 catalog describing the philosophy of the Credor brand at that time. Thanks to Gerald from the thegrandseikoguy for identifying these pages.

Here is a link to the updated article - Credor Brand Introduction and History

50th Anniversary of the first automatic chronograph - Seiko’s 6139

50th Anniversary of the first automatic chronograph - Seiko’s 6139

This year represents the 50th Anniversary of the first automatic chronographs that were released by multiple companies in 1969. Seiko’s first automatic chronograph calibre was the 6139 and it was available in a number of models. There has been much debate over the years as to which companies products were “first” so I try to look at the evidence to determine when Seiko models were first produced and released to the market.

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Seiko 6139A and 6138A Chronograph Technical Guides

Seiko 6139A and 6138A Chronograph Technical Guides

Seiko produced a series of technical guides for their different calibers to assist in service and maintenance of the movements. I have scanned a version of the 6138A and 6139A caliber technical guides that should be of use to many people. As these watches are now reaching 50 years old many examples do not have a known service history and will need to be examined by a competent watchmaker.

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Update: Official Company Publications - Suwa and Watch and Me -

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I recently obtained a new book I had not previously been aware of. This is a Seiko Epson publication compiling different articles and speeches given by Tsuneya Nakamura from throughout his career. Nakamura-san was a highly influential figure in the Suwa / Seiko Epson company development, driving their participation in the Swiss Neuchâtel competitions, leading the “59A Project” that resulted in the development of the original Astron and eventually becoming the President of Seiko Epson Corporation. The book contains a wide range of articles that span 50 years of his career. Details of the book can be found here - Official Company Publications

1973 Seiko Special Luxury Watch Catalog

1973 Seiko Special Luxury Watch Catalog

Seiko released dedicated catalogs for their Special Luxury models in the early 1970’s. These catalogs contained their high end models that featured precious metal cases as well as unique jewellery designs. I recently acquired a copy of the 1973 catalog and have some images fromthe catalog as well as a scan of the full catalog available for download.

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Credor Brand Introduction and History

Credor Brand Introduction and History

The Credor brand was created in 1974 but when initially launched it did not have the same branding that we have come to recognize today. When launched it was a collection of models and not a standalone brand, there was a different spelling and it was a number of years before the name Credor and the distinctive “mountain” logo were introduced. This is a summary of the introduction of the branding and how the Credor range was presented in the first few years.

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Update: Vintage Seiko Dive Straps

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I have updated the Vintage Seiko Dive Straps article to include details of the Seiko 1972 Watchband Catalog No.1. This catalog was discovered and detailed by Gerald over at The Grand Seiko Guy. The original article detailing the catalog can be found at Seiko Watchband Catalogue – 1972/No.1

This catalog provides the first official confirmation that Seiko released orange versions of the Chocolate Bar and XGL-731 Tire Track straps. There is also a newly discovered strap that does not seem to have been issued with any Seiko models but was just available as a replacement part.

The updated article on the Vintage Seiko Dive Straps can be found here - Vintage Seiko Dive Straps

 

Update: Vintage Grand Seiko Bracelets

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I have updated the Vintage Grand Seiko Bracelets article to include details of the Seiko 1972 Watchband Catalog No.1. This catalog was discovered and detailed by Gerald over at The Grand Seiko Guy. The original article detailing the catalog can be found at Seiko Watchband Catalogue – 1972/No.1

The updated article on the GS bracelets can be found here - Vintage Grand Seiko Bracelets