Throughout its long and storied history, Seiko has teamed up with various disparate entites to release commemorative watches - like this gold 1996 Seiko 7N01-6890 "Michinoku Bank" dress watch, with original Seiko 7N01 instructions manual. 
 
Why do we call this a Michinoku Bank watch?  
 
Kanji Japanese engravings on this watch's caseback identify it as a gift from Japanese regional financial institution Michinoku Bank, based in Aomori Prefecture.  
 
Michinoku Bank (株式会社みちのく銀行, kabushiki-gaisha michinoku ginkō) was headquartered in Aomori City, and, while focused on the Tōhoku region of Japan, had a network of branches and subsidiary companies that expanded beyond the region.  In Japan, Michinoku had offices in Hokkaidō, Akita, Iwate, Miyagi, and Saitama Prefectures, as well as a branch in Tokyo.  It also had branches in China and Russia.
 
Michinoku Bank traced its origins to 1894, when the Aomori Shogyo Bank was established.  In 1976, Seiwa Bank, the successor to the Aomori Shogyo Bank, merged with the Hirosaki Sogo Bank to form Michinoku Bank.  In January 1980, Michinoku adopted the use of Tom and Jerry as mascots for the bank.  These mascots were used until 2004, when the bank decided to stop using the characters in order to rehabilitate its image as the “Tom and Jerry Bank.”
 
Michinoku Bank was the bank that was used in the “Anita Scandal.”  This scandal involved a Japanese businessman for the Aomori Prefectural Public Housing Corporation who was arrested for funneling funds in excess of 13 million USD to his Chilean wife, Anita Alvadoro, with some of this money used to build a lavish house in Chile.  In April 2005, Michinoku came under fire again for losing information over an estimated 1.3 million customers.  This prompted a response from the Japanese Financial Services Agency that Michinoku reform its business practices.
 
The Present - The Newly Formed Aomori Michinoku Bank, Ltd
Michinoku Bank’s main rival was Aomori Bank, which it had competed with in the prefecture for many years; however, prolonged low interest rates in Japan made for a tough business environment for smaller banks like these, and the two announced a basic joint agreement in May 2021.  This merger was the first case to be subject to the Special Measures Act on Antimonopoly, which allows for an oligopoly on an exceptional basis.  The full merger of the banks was approved on 20 December 2024 and effective from 1 January 2025.
 
The Aomori Michinoku Bank, Ltd. (株式会社青森みちのく銀行, kabushiki-gaisha aomori michinoku ginkō) is the new Japanese regional bank comprised of the two, and is headquartered in Aomori, Aomori Prefecture, in the Tōhoku region of northern Honshū. The new bank, with antecedent institutions dating back to 1879, was formed on 1 January 2025, when Aomori Bank (continuing) and Michinoku Bank (dissolving) merged their operations. It is the largest (80% share) and only bank based in Aomori Prefecture.
 
The new combined bank has 178 branches in Aomori Prefecture, in addition to others in Hokkaido Prefecture (9 stores), Akita Prefecture (4 stores), Iwate Prefecture (3 stores), Miyagi Prefecture (2 stores), and Tokyo Prefecture (2 stores).  Aomori Bank’s credit rating, systems, online banking, cash cards, and passbooks were continued (with rebranding) in the new entity, with Michinoku customers being required to change over.
 
The merged bank has a net income of 2,166 million yen, with total assets of 3,681.4 billion yen, along with 2,346 employees.
 
On to the watch itself - Seiko introduced its 7Nxx movement in circa 1993, and it came in a range of styles and dial colors, to include the unique helmet-shaped watch here - Seiko would cease production of the calibre in 2009.
 
In 1969, Seiko released a first upon the world - the first quartz wristwatch, its Seiko Quartz Astron.  The Astron went on to change the way the world told time, and severely tested the dominance of the Swiss, bringing high technology within the reach of all.  The Swiss would literally pay for neglecting the evolution of the watch, in terms of market share and profit.
 
As the world got accustomed to the novel new Astron technology dominating the market in the late 1960s and early 1970s, Seiko was hard at work on its next innovation to challenge Swiss watch industry dominance, developing the Superior, Grand Quartz, King Quartz - and eventually the 7Nxx line here. 
 
This gold Seiko dress watch comes on a black leather band, and with nylon strap, rugged travel case, Seiko 7Nxx instructions manual, and springbar tool.