The Grand Seiko 6156-8040 “Special” holds a singular place in the brand’s history as the final vintage Grand Seiko reference ever launched, first introduced in the supplement to Volume 2 of the 1974 Seiko catalogue.
Its standout feature is the exquisite diamond dust–textured dial: Subtle yet captivating, and often likened to the finish seen decades later on modern references such as the SBGD001. Under the right light, the dial comes alive with a soft, shimmering depth that rewards close attention.
In classic Grand Seiko fashion, restraint is key. The minute markers are printed so finely that they almost disappear, preserving a clean, uncluttered aesthetic. The hands, shaped like jousting lances: Slender at the tip and broader at the base, offering excellent legibility while adding a distinctive sense of purpose and elegance.
Powering the watch is the Grand Seiko Special Cal. 6156A, a high-beat 36,000 bph movement regulated to an exceptional ±3 seconds per day at the time of production, surpassing contemporary chronometer standards. The near-continuous sweep of the seconds hand enhances the experience, allowing the wearer to perceive time as a seamless, natural flow.
Ironically, the very process that gives the dial its depth also makes it fragile. As a result, most surviving examples of the 6156-8040 show dial damage or heavy wear, preventing them from being experienced as originally intended.
Offered here, however, is a truly remarkable exception: A miraculous unworn Grand Seiko 61GS Ref. 6156-8040 “Special,” complete with its original tags. Representing the culmination of years of relentless refinement in movement engineering, dial execution, and case design, this reference stands as the pinnacle of vintage Grand Seiko watchmaking.
The watch will be serviced once purchased. Please allow 1~2 months before shipping.
Ships from Tokyo, Japan.
Grand seiko 61GS 6156-8040 Special
This 61GS Special is exceptional. The watch is evidently unworn, and the case retains crisp factory lines, perfectly preserved over time.
The dial, indexes, and handset are immaculate.
The bracelet is beautiful, with no visible scratches. The caseback is immaculate, and the medallion is beautifully preserved.
BRAND: Grand Seiko
MODEL: 61GS Special
REFERENCE: 6156-8040
DIAL: Original diamond-dust pattern dial
CASE MATERIAL: Stainless Steel
CASE DIMENSIONS: 35mm diameter; 11.5mm thickness, 18mm lug width
CRYSTAL: Sapphire glass
CASE BACK: Screw-in Stainless Steel
MOVEMENT: Automatic Cal.6156A
Manufacturing date: August 1974
Service History: Unknown, ±2s/day
Bracelet/Strap: Stainless steel signed bracelet coded XQB220
