Perturbations and the act of observation: A Seiko 6139-8040 from November 1974
In classical physics, a foundational principle is that it is possible to assign precise values simultaneously to all physical properties …
Tag Archives: Seiko
A little light relief: a self-build 62MAS/Pelagos 200m diver’s watch
You know, I do realise that this thing here, this documentation of activity spanning the past 14 years, skirts the …
Changing the battery in a Grand Seiko SBGV009 (revisited)
In 2014, I bought a Grand Seiko SBGV009, part of the 50th Anniversary Historic Collection released that year, and an …
A ghost bezel Seiko Navigator Timer 6117-8000 from 1969
Occasionally I ruminate over what combination of features might contribute to rendering the perfect watch. This is, of course, a …
Origins of the Seikomatic: A 30 jewel Seikomatic 15031D from January 1963
Seiko’s first wholly in-house automatic movement was the Gyro Marvel, developed in 1959 as an evolution of the Marvel/Laurel hand-wind …
King Seiko 5626-7041 Officially Certified Chronometer from May 1974
The King Seiko line was conceived and developed originally by the Daini Seikosha division as a luxury hand-wind watch to …
And the winner is …
The outcome of the question posed in the previous post and elsewhere produced a surprise, to me at least, and …
What’s next?
I need your help. I have many projects waiting in the wings and find myself at a bit of an …
A Seiko 5 Sports 7019-6030 from May 1970
In this, the third and final part of our mini-series on Daini-produced Seiko 5 Sports watches, we turn our attention …
Seiko 5 Sports 5126-6010 from May 1969
Let’s get right into it, the introductions having been made in the previous entry. In this, the second in a …
Seiko 5 Sports transitions: 1969 to 1970
I open this present entry by paraphrasing the introduction to a post I made in June 2015 entitled A Kind …
Adventures in Amateur Watch Fettling 