Seki City, located in Gifu Prefecture has been a famous center of sword and knifemaking in Japan for some
800 years. So yes, Seki is on the list of historical places like Sheffield, Solingen, etc. In the post WWII world
Seki remained the center of knife making, and while the demand for military swords both functional and
decorative vanished, the industry focused on culinary cutlery, scissors, etc. As a city built on and supported by the blade industry they have an annual Hamono Matsuri (blade festival). In 1977 Gerber signed a contract
with a Seki based maker called Sakai and their Silver Knight series became a big hit. Sakai went on to make
knives for Al Mar, Spyderco, and most likely SOG. Sakai with it's log relationship with Gerber changed it's name to Gerber Sakai, and today is known as G. Sakai. They are just one of several knife makers in Seki.
In 1992, 20 Seki manufacturers formed a group to market their products under the brand name "Seki Cut",
although I have only seen this label sold in Japan. A name well known to the west is Ichiro Hattori who is a
renowned Seki knife maker, forgot what generation, and I think he served as chairman of the guild for a while. There have been all sorts of stories about Hattori's involvement with SOG, Boker, Falknieven but I do
not know which ones are true. The original Ben Baker MACV SOG knives were unmarked knives bought from Yogi Shokai (a subsidiary of the trading house Nichimen) and later Japan Sword, and while the likelihood is that the were contracted from Seki makers, I haven't found any definitive or detailed information in that regard. Considering the hush hush nature of those orders we may never definitely know. Seki makers include
Mcusta, Kanetsune, Magoroku, amd many others. Back in the 1980s the knives "Made in Japan" were the
cheap imports in the eyes of many. However as the costs of Japanese production rose 2000-2005 and US companies were forced to turn to "Made in Taiwan",( or worse "Made in China") the old discontinued models made in Japan have become sought after collectors' items. Having "Seki Japan" on the ricasso seems to increase the value. The knives still made in Seki tend to be of high quality and usually a high price tag.