F77 SST TIGER EYE MK1 - 37MM

Nivada Grenchen F77 Tiger Eye worn on wrist against tiger eye stone and brown knit sleeve

The Final chapter of an Icon, written in stone the F77 SST tiger eye MK1

There are watches you buy because they are well made. There are watches you buy because they tell a story. The Nivada Grenchen F77 SST Tiger Eye MK1 is the rarest category of watch: one that does both, and does so as the final edition of a defining series.
As the last model in the F77 MK1 collection, the Tiger Eye MK1 carries with it the full weight of Nivada Grenchen's 1977-rooted design language, the 37mm integrated bracelet format, the Swiss-made SOPROD automatic movement, the alternating satin-brushed and polished case finishing and elevates it with a dial material that is as ancient as watchmaking itself is young.

Nivada Grenchen F77 Tiger Eye Mark I resting on raw tiger eye stone pieces
The Stone, the Science, and the Significance

Tiger eye is a metamorphic gemstone formed when crocidolite, a blue asbestos mineral undergoes a natural pseudomorphic replacement process, with quartz gradually filling the fibrous mineral structure while preserving its parallel banding. The result is a stone of exceptional silky lustre and most distinctively a powerful optical phenomenon known as chatoyancy: a shifting, cat's-eye glow that rolls across the surface as the angle of light changes.

Tiger Eye in Nivada Grenchen's 1970s archive

What makes the F77 Tiger Eye MK1 particularly resonant for collectors is that this is not a material novelty invented for a contemporary market. Nivada Grenchen's vintage 1970s archive includes original watches and advertising featuring tiger eye dials. The F77 Tiger Eye MK1 is therefore a reinterpretation rather than an invention: a return to a material the brand used when the original F77 was first produced, updated with modern manufacturing standards, a Swiss-certified movement, and a level of case finishing that the 1970s originals never achieved.

Nivada Grenchen F77 Tiger Eye MK1 37mm steel watch with tiger eye dial on bracelet, angled view
Watch case icon, front and side

Case

37mm, 316L stainless steel

Nivada Grenchen line drawing icon of a domed sapphire crystal with light reflections

Glass

Double-domed sapphire

Nivada Grenchen line drawing icon of a watch dial with baton hour markers and minute track

Dial

Tiger eye

Nivada Grenchen line drawing icon of a watch movement with gears and a screw

Movement

Soprod P024 automatic

Icon of a fluted watch crown engraved with the Nivada Grenchen N logo

Crown

Screw-down

Icon of a water drop above concentric ripples representing watch water resistance

Water resistance

10 ATM / 100 m

Line drawing icon of a watch strap with buckle, keepers and stitching

strap

Stainlesss Steel or Canvas Velcro strap

Exposed Soprod P024 automatic movement, Twenty-Five Jewels, Swiss Made
Swiss engineering at every level

The case is 316L stainless steel in a two-tone silver and gold finish 37mm in diameter, 12.1mm thick, with a lug-to-lug span of 45mm, benchmarked on an 18.5cm wrist. This is a watch designed to be worn, not displayed: the proportions are deliberately wearable, the integrated bracelet (316L stainless steel, 22x16mm) flows seamlessly from the case lugs to the 316L deployant clasp, and the overall package sits close to the wrist rather than sitting on top of it. The case finishing alternating satin-brushed and polished surfaces including the crystal surround requires precision hand-finishing at every facet change.

Why this case treatment matters

The Tiger Eye MK1 deserves attention for the natural character of its stone dial. Tiger eye is known for its warm amber-brown tones and its shifting, almost luminous bands that move differently depending on the light. This gives each dial a unique visual depth, making every piece slightly different from the next. Rather than relying on decoration alone, the watch draws its personality from the material itself: earthy, warm, elegant, and impossible to replicate in exactly the same way.

Discover the F77 MK2 collection

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