Some specifications for this reference are on file; the record is incomplete.
Hublot · Big Bang
Big Bang
Ref. 301.SX.130.RX — “Original Big Bang”
discontinuedFirst Big Bang (HUB44)Partially documentedLast reviewed Not yet reviewed
Component compatibility
What this reference is documented to have carried, and in what capacity. A service part is the manufacturer's own work; only a counterfeit classification is a finding against the watch.
Documented calibers
Whole production
A Valjoux 7750. Expect the 7750's register layout and rotor behaviour, not an in-house architecture — the HUB number is a designation, not a statement of origin.
Components
Whole production
Whole production
Check that all six H heads read the same way round. Alignment is the hard part; the head shape is trivial to copy.