Citizen CQ Quartz HQS99-9971 SSG - November 1986
By the 1980s, Japanese quartz watchmaking had moved beyond the phase of merely proving a new technology. Quartz had become commonplace; the real challenge was determining how to translate this precise technology into watch design. The Citizen CQ HQS99-9971 stands as a classic, two-tone interpretation of this mature era.
**IMPORTANT NOTE: As this item ships from within the European Union, you will not be liable for customs duties within the EU.**
The serial number 611775 on the case back dates the watch and aligns with the production era of the Calibre 6100 family to November 1986. The watch's tag lists the model code as HQS99-9971 SSG and the movement as Cal. 6100.
While the case, measuring approximately 35.5 mm in diameter, might appear compact by today's standards, it fits perfectly within the classic proportions of 1980s men's watches. The silver-toned dial features a vertically brushed finish paired with gold-toned baton indices. The day-date window at the 3 o'clock position offers both Japanese and English day options a direct reflection of Citizen's practical approach tailored to its domestic market.
Although the fluted gold-toned bezel is the design's most striking feature, gold accents are not limited to that element alone. The repetition of this same tone on the crown, indices, hands, and the center links of the bracelet creates a balanced, two-tone aesthetic against the steel case.
The small CQ emblem at the bottom of the dial quietly embodies the Citizen quartz identity of that era. The use of a subtle symbol rather than a bold "Quartz" declaration signals that the technology was no longer a spectacle in itself.
The Calibre 6100 designation is not derived solely from the case back reference; The product tag and the Citizen instruction manual accompanying the watch confirm the same movement family. The "BAT. 3 YEARS" notation on the tag directly documents the three-year battery life expectancy typical of that era.
The watch is in NOS (New Old Stock) condition. Its original tag and documentation have been preserved. Please note that the box shown in the photos is not an original Citizen box.
Final Thoughts
The story of this Citizen is less about a technological revolution and more about the maturity that followed it. Since quartz technology was no longer a novelty, the watch defines itself not merely by its movement, but by its proportions, calendar display, and distinctive two-tone 1980s design.
The item shown was manufactured in 1986.
IT HAS UNDERGONE A COMPLETE PROFESSIONAL SERVICE.
The movement was fully disassembled; every component was cleaned, lubricated, and precision-adjusted to ensure flawless operation. (It requires no maintenance for three years, provided it is not exposed to adverse conditions.)
Product Condition: Tested; all functions are fully operational.
