Sartory Billard SB04-EvsTrenyo 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-E

Basse-taille Grand Feu Enamel Piece Unique
Diameter
39.5mm
40mm
Lug-to-Lug
46mm
lowest
47.5mm
Thickness
10.3mm
lowest
10.8mm
Water Resistance
100m
highest
50m
Power Reserve
68h
68h
MSRP
$3,609
lowest
$4,199
Movement
La Joux-Perret G101
La Joux-Perret G101
Case
5 specsCrystal & Dial
3 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-E for its impressive and deep dials, with specific mentions of the 12 Soleil pattern and the Exquisite Blue Guilloché appearing to move like water in the light. Reviewers highlight its sensible 39.5mm size and 100m water resistance, noting the overall composition looks more expensive than its price. One owner points out slightly sharp edges on the caseback and suggests a more domed crystal. The watch utilizes the La Joux-Perret G101 automatic movement with a 68-hour power reserve. Overall, owners and reviewers rate the Sartory Billard SB04-E highly for its unique dial work and value proposition.
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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