Reference
MB&F Legacy Machine Split Escapement
Reference 04 · Titanium
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About this reference
The MB&F Legacy Machine Split Escapement (LM SE) in Grade 5 titanium was introduced in 2019 as a limited edition of 33 pieces featuring a green CVD-treated dial plate. This reference utilizes the manual-wind caliber developed by Stephen McDonnell, characterized by its 14mm balance wheel suspended above the dial while the anchor and escape wheel are positioned beneath the movement. The 44mm case houses a dial plate finished with a traditional hand-frosted texture, a signature aesthetic of the Legacy Machine collection. Collectors value this specific reference for its lightweight construction and the technical complexity of the split escapement architecture. On the secondary market, these timepieces typically trade in the low-to-mid six-figure range, often between $110,000 and $140,000 depending on condition. A notable production detail is that this titanium edition followed the initial 2017 launch of the four gold launch editions.
Auction track record
2 documented sales since 2022. Top hammer $52,254 at Christie's Hong Kong in 2022. Median hammer: $47,880. Most recent: $47,880 in 2025.
Ranks #18 of 26 MB&F auction lots we track — see all MB&F records.
All documented hammer prices
For this reference (and close variants).
| Lot | Year | Hammer | Venue |
|---|---|---|---|
| 32T0044 · Horological Machine No. 3 'Frog' | 2022 | $52,254 | Christie's Hong Kong |
| 04.T.GU · Legacy Machine Split Escapement | 2025 | $47,880 | Christie's Dubai |
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