Sotheby's Hong Kong · 2017
MB&F — Horological Machine No. 4 Thunderbolt
Reference HM4 Thunderbolt · Titanium
$147,435
≈ CHF130k · €136k · £116k · HK$1.15M · ¥22,999,860
About this lot
An early example of the aviation-inspired HM4, featuring a three-dimensional horological engine with twin mainspring barrels and 311 components.
Source: https://www.sothebys.com/en/auctions/ecatalogue/2017/important-watches-hk0743/lot.2326.html
Other documented MB&F auction lots
| Reference | Model | Hammer | Year | Venue |
|---|---|---|---|---|
| HM4 | Horological Machine N°4 Thunderbolt | $285,000 | 2024 | Phillips New York |
| HM10 Panda Only Watch | Horological Machine No. 10 'Panda' Only Watch | $679,160 | 2021 | Christie's Geneva |
| 60.SPL.B | Horological Machine No. 6 Sapphire Vision (HM6-SV) | $209,550 | 2025 | Christie's New York |
| HM6 Space Pirate | Horological Machine No. 6 'Space Pirate' | $180,180 | 2022 | Christie's Hong Kong |
| 03.WL.P | Legacy Machine Perpetual | $157,513 | 2025 | Christie's Geneva |
| HM4 Thunderbolt | Horological Machine No. 4 'Thunderbolt' | $147,756 | 2024 | Bonhams Hong Kong |