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.
Ranks #7 of 26 MB&F auction lots we track (top 27%) · #505 of 1,119 documented luxury watch sales overall (top 45%) · all MB&F records →
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 |
Comparable lots in this hammer band (cross-brand)
Other watches sold within ±35% of $147,435, excluding MB&F.
| Brand · Reference | Model | Hammer | Year | Venue |
|---|---|---|---|---|
| Richard Mille RM011 |
Felipe Massa Titanium | $147,420 | 2025 | Christie's Hong Kong |
| F.P. Journe 36/38-Q |
Octa Calendrier Limited Edition | $147,600 | 2022 | Bonhams London |
| Urwerk UR-CC1 |
UR-CC1 King Cobra | $148,590 | 2025 | Christie's Hong Kong |
| Voutilainen 217QRS |
Reference 217QRS Retrograde Date | $146,050 | 2023 | Sotheby's New York |
| Cartier Maxi Oval |
Baignoire Allongée | $145,669 | 2023 | Bonhams London |
| Audemars Piguet 25636BA |
Royal Oak Skeletonized Perpetual Calendar | $145,530 | 2022 | Christie's Geneva |