This article delves into the Grand Seiko "Masterpiece Collection Hand-wound Spring Drive Engraved Limited Edition" Ref. SBGZ011, unveiled at Watches & Wonders Geneva 2026. The meticulous craftsmanship of the interior and exterior, created by the artisans of the Micro Artists Workshop, justified the high price tag of 1210 million yen for both the author and the user.
Photographs & Text by Shun Horiuchi
[Article published on January 4, 2026]
Engraved models from the "Masterpiece Collection"
At Watches & Wonders Geneva 2026, Grand Seiko unveiled new products, which were well-received once again this year. Among the models announced, the engraved model Ref. SBGZ011, which has been added to the "Masterpiece Collection," is introduced here with photographs taken by the author.
This platinum-cased model is scheduled for release on July 10th, 2026 (Friday), and will be limited to 50 pieces worldwide. Only 30 pieces are allocated to Japan, and there are reports that some stores have already sold out of pre-orders. This is a Grand Seiko Boutique exclusive model. Let's take a look at the details of this model, which at first glance leaves an unprecedented impact with its design.
Engraved case and dial
A limited edition model featuring a hand-engraved case and dial. Hand-wound Spring Drive (Cal. 9R02). 39 jewels. Power reserve of approximately 84 hours. Platinum case (40mm diameter, 9.6mm thickness). 3 ATM water resistance. Limited to 50 pieces worldwide (30 in Japan). 12,100,000 yen (including tax). Scheduled for release on July 10, 2026 (Friday).
This watch is based on the "44GS," and as you can see in the photos, its case and dial feature extremely distinctive engraving. The most striking feature of this watch is undoubtedly its appearance. The waterfall, known as "Hisen" (飛泉) due to the force of its water, is the inspiration for this engraving, which depicts the flow of water inspired by a waterfall in the Tateshina Highlands of Shinshu. However, it is not a flow in one direction, but rather appears random while maintaining a sense of unity, giving an impression that is the complete opposite of "inorganic." This engraving was done by skilled artisans at the Micro Artist Workshop within Seiko Epson's Shiojiri Plant in Nagano Prefecture.
When I saw this watch, I also looked at the Credor Gold Feather Tourbillon Engraved Limited Edition Ref. GBCF997, which also features engraving. While the engraving on the Gold Feather was extremely sharp, the engraving on this watch gave a somewhat softer impression. In recent years, Grand Seiko has gained popularity with its brand philosophy "THE NATURE OF TIME"—a stamped dial design that uses the ever-changing nature of Japan as a motif, based on Japanese aesthetics and spirituality. Like such a dial, each individual line of the engraving on this watch feels reasonably sharp, but rather than being sharp and crisp, it feels like the engraving as a whole creates an atmosphere and texture that resonates with Japanese aesthetics. It is not a glaring, flashy shine, but rather the collection of light that softly undulates through the engraving transforms the 44GS case, which originally has a crisp, solid feel, into something else entirely.
The dial also features similar engraving. Unlike the case, the dial is likely made of brass. In engraving, there is a significant difference between platinum, which is inherently tough, and brass, which is highly machinable, but the fact that there is absolutely no difference in the texture of the engraving on the dial and the case speaks to the high level of skill. The engraving extends to the ridges on the sides of the case, which is a characteristic of the 44GS, but it does not disrupt the overall form. Naturally, each product will have slightly different engraving, and no two will be exactly alike, but it is mind-boggling to think that they were able to complete 50 models with this level of quality.
Spring Drive movement Cal.9R02
The movement installed is the hand-wound Spring Drive Cal.9R02. The engraved design, which expresses the movement and flow of water, and the Spring Drive with its smoothly sweeping second hand are a good match.
The Cal.9R02 is also made in the Micro Artists workshop and features more hand-finishing compared to other common Spring Drive movements.
Compared to the Cal.9R31, a hand-wound Spring Drive movement manufactured by Shinshu Toki no Takumi Kobo and developed with the same concept as the Cal.9R02, one of its distinguishing features is that the bridge is deliberately divided into two sections, and the divided design wraps around the shape of the jewel holes, like in traditional mechanical movements. Furthermore, the beveled edges are hand-finished to a mirror finish. While the beveled edges of mass-produced diamond-cut watches are a perfect C, the beveled edges of this hand-finished watch have a slightly gentler "R" shape. The finishing around the jewel holes also appears to have been done by hand. Incidentally, "C" in machining refers to a 45-degree chamfer on a right-angled edge. It is often referred to as "taking a 0.5 C." In the field of machining, it is often done for deburring purposes. In contrast, the finishing of an edge with a radius R is expressed as "R." Both are defined in JIS.
The bridge surface has the standard hairline finish of Spring Drive. The mainspring barrel, carved with a bellflower motif, is clearly more elaborate than the plain Cal.9R31. This motif likely originated with the Credor Spring Drive Sonnerie Ref. GBLQ998, which was surprisingly announced in 2006. This design directly shows the lineage to the Credor Node Eichi and Eichi II, which later used the Cal.7R series Spring Drive.
Manual winding. Power reserve of approximately 84 hours. Average monthly deviation of ±15 seconds (equivalent to ±1 second per day). Features a torque return system, dual spring barrel, and power reserve indicator. Crafted in the Micro Artists Workshop, it boasts a higher level of finish compared to mass-produced Spring Drive models, combining both functionality and aesthetic appeal. This movement is featured in only two Grand Seiko references: this model and the Ref. SBGZ003 (8,085,000 yen including tax) from the same Masterpiece Collection.
In addition, the Cal.9R02 has 39 jewels compared to the Cal.9R31's 30, which contributes to reduced wear on the parts. The power reserve indicator is set on the case back so as not to detract from the engraved dial, which seems like a reasonable decision.
The Spring Drive's smoothly sweeping second hand is tempered to gray instead of the usual blue. While typical blue tempering is done at around 300°C before removing from the heat source, exceeding this temperature causes the metal to turn from gray to almost black. This utilizes the phenomenon where the thickness of the iron's oxide film increases, changing its appearance. By deliberately toning down the color, a sense of overall unity is achieved. Perhaps they could have even tempered the movement's blue screws and power reserve hand to this gray to achieve a unified look on both the front and back.
The Cal.9R02 features a barrel housing two mainsprings, achieving a long power reserve. Furthermore, the addition of a torque return system—a mechanism that reuses energy to rewind the mainspring while the watch is running for approximately 48 hours from a fully wound state (when the mainspring has high torque)—extends the power reserve even further, reaching approximately 84 hours. This provides a full 3.5 days of operation, more than enough even with a weekend in between. However, it's unlikely that many owners of this class of watch would own only one, so it may stop occasionally. Nevertheless, this watch, lacking a date display, is easy to set the time on, making it likely to be a frequently used timepiece.
Other details
The "SD (Special Dial)" mark on the dial, indicating that the indices are made of solid gold, is also expressed through engraving, showcasing its exquisite detail. Furthermore, the minute track on the outer edge is represented solely by engraving, and the fact that it is not filled in with any ink is a nice touch. The applied indices are faithful to the Grand Seiko style and are made of crisp, high-quality 14K white gold. The hour and minute hands are diamond-cut, thick dauphine-shaped hands, which can be considered the "standard" for Grand Seiko, and it would be hard to imagine any other design.
The bezel is a separate component from the case, just like the middle case. It is engraved all over. From there, a box-shaped sapphire crystal rises up.
The middle case features a section on the top of the lugs that lacks engraving and instead has a vertical hairline finish, clearly indicating its 44GS-type case. The contrast between the engraved and hairlined surfaces creates a very well-balanced look. The middle case section between the lugs is also polished to a mirror finish, demonstrating a level of craftsmanship commensurate with the price.
While no official photos show the case back, the underside of the lugs features the deliberately softened finish that has become the "standard" specification for recent Grand Seiko watches, making it comfortable against the skin. This "softened" finish means that flat surfaces and sharp edges have been removed, not that the finish is poor, so please do not misunderstand. In fact, you will be able to see that it is polished to a sufficient mirror finish in person. Of course, you can admire the Spring Drive movement "Caliber 9R02," including its hand-finishing, through the glass back.
Finally, the crown. This isn't something specially designed for this model; it's a standard one. The crown is very important for a hand-wound model, and it seems best not to try anything unusual here. There should be no complaints about its size or shape. Also, instead of making the knurling extremely sharp, I felt that, similar to the concept of the treatment on the back of the lugs, the shape is deliberately designed to maintain a sufficient grip for the fingers.
Stepping back from the details and taking a bird's-eye view of the watch as a whole, like appreciating a painting, it emerges as a soft, silvery "mass" that reflects various expressions of light. It might even resemble Van Gogh's "Starry Night" from a certain period.
However, it's certainly not colorful. The decision to omit any black ink from the dial and to avoid using a blue hand for the center seconds hand seems like a wise one. The unified, low-saturation appearance, while making a strong impression thanks to the engraving, is somehow understated. Many people will likely find a Japanese aesthetic in that aspect.
The buckle is also made of platinum (partially 18K white gold), and like other Grand Seiko folding buckles, the finish and feel are impeccable.
There are two types of straps available, and the one we examined came with a seamless crocodile strap. The quality was impressive, possessing the thickness and elasticity to support the heavy body, as well as suppleness. It is the most formal style, without stitching. The other type is a KYOTO Leather calfskin strap, with a splash-like design that matches the concept of the engraved "Hisen" design. Switching to this strap would instantly make it suitable for casual attire as well.
Summary
The Grand Seiko "Masterpiece Collection Hand-wound Spring Drive Engraved Limited Edition" is one of the ultimate Grand Seikos currently available, produced in extremely limited quantities. With its exterior handcrafted by artisans and featuring motifs inspired by the nature of Shinshu, and a movement made in the Micro Artists Workshop in Suwa, it is undoubtedly one of the finest "Shinshu" Grand Seikos. It stands on par with the mechanical Grand Seiko models made in Morioka, Iwate Prefecture, and viewing this timepiece while considering the company's history as a watchmaker may reveal a different kind of charm.
Despite its price tag of 1210 million yen, I hear this game is already attracting a lot of interest, so if you're still undecided, I recommend making a decision soon.
