





93Σ
MB & F
Ref. 40.TSL.B
Horological Machine No. 4 “Thunderbolt”
An exciting, innovative, and early titanium fighter-plane shaped wristwatch with power-reserve indicator, guarantee, and presentation box
- Estimate
- $80,000 - 160,000
Lot Details
- Manufacturer
- MB & F
- Year
- Circa 2011
- Reference No
- 40.TSL.B
- Case No
- 40T0013
- Model Name
- Horological Machine No. 4 “Thunderbolt”
- Material
- Titanium
- Calibre
- Manual, 50 jewels; developed with Laurent Besse and Beranger Reynard
- Bracelet/Strap
- Crocodile
- Clasp/Buckle
- Titanium MB&F pin buckle
- Dimensions
- 54mm width x 52mm length
- Signed
- Dial, case, movement, and buckle signed.
- Accessories
- Accompanied by blank MB&F international warranty booklet, product literature, leather wallet, additional fitted presentation box in the form of a thrust lever, and outer packaging. Further accompanied by MB&F service certificate dated November 2024 and MB&F “The Minimilians” 3D-printed figurine.
Specialist
Full-Cataloguing
Catalogue Essay
For the free thinker, the irreverent, and the bold, MB&F’s Horological Machine 4 embraces the unexpected. Introduced in 2010, it has drawn collectors and enthusiasts for over a decade with its powerful and inspired design as well as its technical prowess.
The design of the Horological Machine 4 is directly inspired by the fuselage of the P47-Thunderbolt fighter plane. The movement took three full years to develop and is ingeniously placed on a horizontal plane. Dual mainspring barrels drive two vertical gear trains, transferring power to the dial indicating hours and minutes on the right and power reserve on the left.
Made in only 50 pieces in titanium, the case is quite light for enhanced wearing comfort, and regardless of its unusual ergonomics, the watch sits very well on the wrist and could even be considered the perfect pilots’ watch.
The present HM4, numbered 13, comes directly from the collection of an important collector of independent watches. In well-preserved condition, the watch comes complete with all its original accessories.
The design of the Horological Machine 4 is directly inspired by the fuselage of the P47-Thunderbolt fighter plane. The movement took three full years to develop and is ingeniously placed on a horizontal plane. Dual mainspring barrels drive two vertical gear trains, transferring power to the dial indicating hours and minutes on the right and power reserve on the left.
Made in only 50 pieces in titanium, the case is quite light for enhanced wearing comfort, and regardless of its unusual ergonomics, the watch sits very well on the wrist and could even be considered the perfect pilots’ watch.
The present HM4, numbered 13, comes directly from the collection of an important collector of independent watches. In well-preserved condition, the watch comes complete with all its original accessories.