Jean-Pierre Hagmann’s JPH Signature and His Career in Watch Case Making

First reported

Italian Watch Spotter · 11 Oct 2026, 10:00 UTC

Found by WristBible

11 Oct 2026, 10:00 UTC

Sources

1

Jean-Pierre Hagmann’s JPH initials identify the work of a Geneva craftsman who spent decades making watch cases. Born in 1940, he began a jewellery apprenticeship at Ponti Gennari at 17, working with a supplier of Patek Philippe bracelets. He later assembled Rolex bracelets at Gay Frères before briefly moving into racing motorcycle mechanics.

Summary written by WristBible's AI editor from the publishers' reporting (originally in Italian).

Coverage

• Italian Watch SpotterJPH: la firma del maestro Jean-Pierre Hagmann che trasformò la cassa in arte(IT)11 Oct 2026, 10:00 UTC