The Reference
HM11 Architect, introduced in 2023, treats a wristwatch like a small building. Four wings radiate from a central axis like rooms off a hallway, produced in 25 pieces per colour, with a later Art Deco variant limited to 10 per colour.
MB&F HM11 Architect
SOLD€176,000.00
SPECIFICATIONS
ReferenceHM11 — Architect
Production2023 · 25 pieces per colour (Art Deco: 10 per colour)
CaliberIn-house manual, case-wound, 364 components, 29 jewels
MovementManual, wound by rotating the entire case; one-minute flying tourbillon
Power Reserve96 hours
Jewels29 jewels
ComplicationsHours, minutes, flying tourbillon, power reserve, mechanical thermometer
Case Dimensions42 mm × 23 mm
Case MaterialTitanium & sapphire
CrystalSapphire
THE STORY
HM11 Architect turns a building into a watch. Four wings radiate from a central flying tourbillon like rooms off a hallway, each a separate display — the time, the power reserve, and a genuine mechanical thermometer. The cleverest move is not the metaphor but the interaction: there is no crown, so you wind the movement by rotating the entire titanium-and-sapphire case, and you turn it to bring whichever room you want to read toward you. Designed by Eric Giroud with a movement by Thomas Lorenzato and Robin Cotrel, it is eccentric on the surface and disciplined underneath.
THE DOSSIER
The Design
Each wing is a room with its own job — the time, the power reserve, a real mechanical thermometer, and the tourbillon. There is no crown: you wind the movement by rotating the entire titanium-and-sapphire case, and you turn the case to bring whichever room you want to read toward you.
The Mechanics
The in-house movement carries 364 components and 29 jewels, a 96-hour reserve, and a one-minute flying tourbillon. The case was designed by Eric Giroud with the movement by Thomas Lorenzato and Robin Cotrel; eccentric on the surface, disciplined underneath.
CONDITION
Movement timing was recorded on our bench before this watch was offered — the figures are below. A full condition report for this specific example, covering case, dial and service history, is available on request.
Mechanical Movement
Before it left our bench, this movement was put on a timing machine and read in six positions. Here is how it performed.
| Rate | Beat error | Amplitude | |
|---|---|---|---|
| Averageacross six positions | +3 s/day | 0.3 ms | 275° |
| Deviationsteadiest to least steady | 8 s/day | 0.5 ms | 41° |
Average is the mean across dial up, dial down and the crown at up, down, left and right. Deviation is the spread between its steadiest and least steady position — a read on how consistently it keeps time, not just how fast it runs.
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