Some specifications for this reference are on file; the record is incomplete.
H. Moser & Cie. · Pioneer
Pioneer
Ref. Pioneer Centre Seconds
currentModernPartially documentedLast reviewed Not yet reviewed
Missing informationCore fields not yet documented for this reference: Case diameter, Production, Water resistance, Dial
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
Look for the escapement as a discrete module through the display back.
Components
Whole production