Reference:1019: Difference between revisions

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==CERN provenance==

[[File:Ref 1019 cern-dial.webp|thumb|right|300px|alt=Silver CERN non-lume 1019 dial — black-infilled hand interiors, no tritium plots at the indices, foot text reading T SWISS T despite carrying no actual tritium|Silver CERN non-lume dial detail — black-infilled hands and indices in place of the tritium lume plots the standard dial carries.]]

The 1019's CERN association lives at the dial-specification level, not at the documented-procurement level. The non-luminous silver dial existed as a Rolex catalog option and the operational rationale is sound: radium and tritium beta-decay produce scintillation noise in radiation-sensitive equipment, and a non-lume dial removes the source from the wearer's wrist. The CERN-spec dial sits across c.1964-c.1969 production in the documented record; no documented CERN-spec 1019 from the 1970s or later has appeared, suggesting the spec petered out after the first decade as CERN's instrumentation evolved.

@@ Line 270: / Line 270: @@
 ==CERN provenance==
+[[File:Ref 1019 cern-dial.webp|thumb|right|300px|alt=Silver CERN non-lume 1019 dial — black-infilled hand interiors, no tritium plots at the indices, foot text reading T SWISS T despite carrying no actual tritium|Silver CERN non-lume dial detail — black-infilled hands and indices in place of the tritium lume plots the standard dial carries.]]
 The 1019's CERN association lives at the dial-specification level, not at the documented-procurement level. The non-luminous silver dial existed as a Rolex catalog option and the operational rationale is sound: radium and tritium beta-decay produce scintillation noise in radiation-sensitive equipment, and a non-lume dial removes the source from the wearer's wrist. The CERN-spec dial sits across c.1964-c.1969 production in the documented record; no documented CERN-spec 1019 from the 1970s or later has appeared, suggesting the spec petered out after the first decade as CERN's instrumentation evolved.