Observations from the modern Grand Seiko data

After collating information on the Grand Seiko models released since 1988 there are various patterns and statistics that can be extrapolated from the data. The original data can be found HERE. Below are a few of the interesting details that can be seen when looking at this information.

Looking at the table below you can see the type of movements and how these correlate to the different model series.

Series to Calibre mapping

Series to Calibre mapping

If you look at the calibre and series you can see that many series have utilized multiple calibres over the years with two calibers used in many series and the SBGR series using 5 different calibres. The only calibre that has been used in multiple series is the 9S61, an automatic three handed movement with no date function, that has been used for both mens (SBGR) and womens (STGR) models.

The majority of all models released have been powered by a quartz movement, but this number is skewed by the inclusion of ladies watches as they have approximately 90% quartz models. If you look at just the mens models it is almost an even split between quartz, mechanical and Spring Drive models.

All Models

Mens Models

The most common series is the Spring Drive SBGA with almost 20% of all models.

All Models Per Series

The most commonly used case material is Stainless Steel as you would expect. This makes up around 70% of all models followed by Titanium and then precious metals. The mix of case materials is essentially identical for when looking at all models or just the mens.

Case Material for all Models

The least utilized material is Tungsten Carbide that was used only on a single model, the SBGT009 a Limited Edition of 300 pieces from 1998. The watch used a combination of Tungsten Carbide and Stainless Steel for the case, bezel and bracelet. The material is extremely hard compared to regular stainless steel, making it highly scratch resistant but also difficult to machine. Seiko used Tungsten Carbide on a number of models in the 1970’s and it would be nice to see this utilized again in the future.

If you look at the distribution of new models per year you can see that these have been slowly growing through the 1990’s and early 2000’s but from around 2010 the release of models rapidly increased. The large spike in new models in 2017 can be attributed to the change in branding when the Seiko logo was removed from the dial.

After updating the pricing for almost all models the trends in the general Grand Seiko pricing over the years can e seen. Below is the average price of new models released per year, but I have excluded all models over 2,000,000円 as these releases significantly skewed the data.

Average Model Price per Year