Gold-Tone Twin Quartz with Diamond Dust Dial | Dated June 1978
A radiant expression of Seiko's peak quartz craftsmanship, this Seiko Grand Quartz 9943-8020 pairs groundbreaking precision with striking visual opulence. Finished in gold-tone throughout, the case and integrated bracelet shimmer with elegant finesse—setting the stage for the showstopper: a diamond dust-textured dial that catches the light with every subtle wrist movement.
At the heart beats Seiko’s Caliber 9943 Twin Quartz movement, engineered to correct for temperature variations and achieve an astounding ±10 seconds per year. It features a hacking function, quickset day-date (Kanji/English), and the iconic double lightning bolt insignia at 6 o’clock—signaling its elite status in Seiko’s quartz hierarchy.
The design channels classic Grammar of Design DNA with sharp faceted lugs, polished bevels, and a brushed case top that plays beautifully against the mirror-polished edges. The integrated gold-tone bracelet is woven with alternating polished and matte links, completing the aesthetic of vintage Japanese luxury.
Specifications
Model: Seiko Grand Quartz 9943-8020
Movement: Cal. 9943 Twin Quartz, ±10 sec/year
Case: Gold-tone stainless steel, ~36mm wide
Dial: Gold “diamond dust” texture, applied indices
Crystal: Hardlex
Bracelet: Integrated gold-tone multi-link, signed clasp, free size
This is not just a watch—it’s a statement piece from a time when Seiko was pushing quartz technology to its absolute limits, while still honoring Japanese artistry and refinement. A rare find in this condition, especially with its dazzling dial and full original bracelet.
