Sartory Billard SB04vsTrenyo Basse-taille Grand Feu Enamel Piece Unique
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Measurements
Catalog photos are all shot at the same flattering size. These aren't: every case below shares one millimeter scale.

SB04

Basse-taille Grand Feu Enamel Piece Unique
Diameter
40mm
40mm
Lug-to-Lug
45.5mm
lowest
47.5mm
Thickness
11.5mm
10.8mm
lowest
Water Resistance
30m
50m
highest
Power Reserve
n/a
68h
MSRP
$3,376
lowest
$4,199
Movement
La Joux-Perret G100
La Joux-Perret G101
Case
4 specsCrystal & Dial
2 specsMovement
2 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
Owners widely praise the Sartory Billard SB04 for its stunning, custom dials with remarkable texture and light play, with many calling it a masterpiece. The watch is noted for its modern wearing experience and comfortable, light feel, particularly when constructed from titanium. Some owners find the steel casebacks slightly sharp due to deep laser cutting, and one owner notes the hands can be difficult to see depending on the viewing angle. The Sartory Billard SB04 is powered by the La Joux-Perret G100 automatic movement. Overall, owners rate the Sartory Billard SB04 highly for its exceptional dial artistry and perceived value.
The dial's textured finish and color shift are highlighted as a key strength. The bracelet's perceived lack of refinement and end-link fit are noted as a drawback. Reviewers disagree on the case size, with mentions of 35.9mm and 40mm.
Owners widely praise the Trenyo Basse-taille Grand Feu Enamel Piece Unique for its magnificent Grand Feu enamel dial, which exhibits unmatched sheen and plays magnificently with light, changing color and glitter with ambient conditions. The maker considers this their best work, highlighting the handmade sterling silver case and applied Breguet numerals, though they express a preference for mineral glass over sapphire due to its reflectivity. The complex, high-failure process of Grand Feu enameling is noted, with one enamelist describing the work as that of a grand master requiring decades of practice. The watch is priced at 2,350 CHF and utilizes an automatic La Joux-Perret G101 movement. On balance, owners rate the Trenyo Basse-taille Grand Feu Enamel Piece Unique highly for its exquisite Grand Feu enamel dial and hand-finished sterling silver case, representing a unique value proposition.
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