# Louis Erard Le Régulateur Blanc Louis Erard x Alain Silberstein LE-178 Review by A.I. WatchMetrics

## Watch Summary
The Louis Erard x Alain Silberstein Le Régulateur Blanc (ref. 78.20.10.LE.178.S01) is a limited-edition artistic regulator in a dress-collector style, showcasing a clean white dial with Alain Silberstein's signature geometric hands—a red triangle hour hand sweeping the bottom chapter ring, a blue rotating disc minute hand at center, and a yellow rectangular seconds hand at the top subdial—within a versatile 40mm stainless steel case, powered by the Sellita SW200-1 automatic movement offering a 38-hour power reserve, ideal for enthusiasts desiring bold, exclusive Swiss design without ultra-luxury costs.

## Overall Watch Rating: 7.6/10.0

**Dials & Design Metric (9.6/10.0)** - Alain Silberstein's avant-garde regulator layout with vibrant geometric hands and pristine white dial delivers standout artistic flair comparable to top independent microbrands.
**Material Metric (9.4/10.0)** - The 316L stainless steel case with brushed/polished finishing and double-sided AR sapphire crystal rivals the build quality of Omega's entry-level divers.
**History & Innovation Metric (8.8/10.0)** - Louis Erard's nearly 250-year heritage fused with Silberstein's innovative geometric regulator elevates it beyond typical collaborations.
**Brand Metric (8.2/10.0)** - Louis Erard offers reliable Swiss luxury entry with this standout collab, on par with Oris or Christopher Ward flagships.
**Versatility Metric (8.1/10.0)** - At 40mm with a white dial and leather strap, it transitions seamlessly from office formal to evening collector piece like a Nomos Tangente.
**Complications Metric (7.5/10.0)** - The dedicated regulator configuration provides elegant time separation akin to vintage regulators from Glashütte Original.
**Rarity Metric (7.0/10.0)** - Limited to 99 pieces, it strikes a balanced exclusive appeal similar to many Oris limited releases.
**Movement Metric (6.5/10.0)** - The Sellita SW200-1 automatic is a solid, accurate performer but lacks the refinement of ETA or in-house alternatives.
**Functions Metric (3.2/10.0)** - Pure time-only display keeps functionality basic, trailing multifunction pieces like date-equipped Tudors.

## Total Performance Score (TPS): 9.9

## WM Collector Grade: A+

## Performance Insights: Exceptional strengths in dials, materials, and innovation make this a collector standout, offset by basic functions, delivering outstanding value well below its implied price equivalent.

## TPS Interpretation: Exceptional Value: The watch overdelivers on unique design and limited exclusivity at a fraction of comparable artistic horology pricing.

## Watch Data
[Picture URL] - https://www.louiserard.com/media/catalog/product/cache/c687aa7517cf01e65c009f6943c2e554/7/8/78_20_10_le_178_s01_1.jpg; [backPicture] - https://www.louiserard.com/media/catalog/product/cache/c687aa7517cf01e65c009f6943c2e554/7/8/78_20_10_le_178_s01_2.jpg; [lumePicture] - https://www.louiserard.com/media/catalog/product/cache/c687aa7517cf01e65c009f6943c2e554/7/8/78_20_10_le_178_s01_3.jpg; [Nickname] - Le Régulateur Blanc; [Brand] - Louis Erard; [Model] - x Alain Silberstein Le Régulateur; [Country] - Switzerland; [Product Link] - https://www.louiserard.com/en/watch/louis-erard-x-alain-silberstein-le-regulateur-78-20-10-le-178-s01/; [reviewLink] - https://www.hodinkee.com/articles/louis-erard-alain-silberstein-le-regulateur; [Movement Type] - Automatic; [Movement Name] - Sellita SW200-1; [# Secondary] - 0; [watchDescription] - Limited edition 99pcs collaboration regulator with white dial and geometric hands; [caseWidth] - 40; [lugToLugLength] - 47; [thickness] - 10.1; [lug] - 20; [waterResist] - 50; [powerReserve] - 38; [beatFrequency] - 28800; [lume] - Super-LumiNova; [jewels] - 26; [caseMaterial] - Stainless Steel; [watchGlass] - Sapphire AR; [Bezel] - Fixed; [caseback] - Solid; [Crown] - Screw-down; [Strap] - Calf Leather; [Shape] - Round; [Dial] - White Regulator; [Seconds] - Yes; [Date] - No; [Calendar] - No; [Chiming] - No; [Chronograph] - No; [Compass] - No; [dateCompilation] - No; [DigitalDisplay] - No; [Dress] - Yes; [Field] - No; [GMT] - No; [Mechanical Alarm] - No; [Moonphase] - No; [Tourbillon] - No; [worldTimer] - No; [powerReserveIndicator] - No; [Diver] - No; [Pilot] - No; [racing] - No; [Skeleton] - No; [Vintage] - No; [StyleFormal] - Yes; [StyleCasual] - Yes; [StyleSports] - No; [StyleTravel] - No; [StyleAdventure] - No; [StyleCollector] - Yes; [StyleTool] - No; [StyleStatement] - Yes; [StyleVintage] - No; [StyleSmart] - No; [StyleCustom] - Yes; [TPS_new] - 9.9; [TPSgrade] - A+; [TPSimpliedPrice] - 1850;

**A.I. WatchMetrics Review v37.4 Grok 4 Fast. December 19, 2025.**