Collector review
MB&F Horological Machine No. 5 (HM5) 55R339 review
Ref. 55R339 · 18k Red Gold and Titanium · MB&F
Verdict
MB&F Horological Machine No. 5 (HM5) 55R339 is a serious collector reference because it combines brand recognition, recognizable design language and a case profile in 18k Red Gold and Titanium. The strongest examples trade on condition, originality, full set documentation and clean provenance.
Why collectors care
Collectors search for MB&F 55R339 because the reference is easy to identify, hard to replace quickly and widely understood by dealers, auction houses and private clients. That liquidity matters when prices move.
Market position
For MB&F, the best market signal is not only asking price. Compare live listings with documented auction results, recent availability and whether the same configuration appears repeatedly or disappears quickly.
Buying checklist
- Confirm the exact reference, dial, case material and production-era details.
- Prioritize full set examples with service history and seller reputation.
- Compare the ask against auction comps, not only other listings.
- Check polish, replacement parts and provenance before wiring funds.