Watch Glossary
1676 horological terms explained
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Radioactive lumeMaterials
Vintage luminous materials containing radioactive elements like radium or tritium for continuous glow
Radium LumeMaterials
Radioactive luminous paint used pre-1960s; highly collectible but hazardous.
Radium Lume PatinaMaterials
Observable color shift in radioactive luminous material from original cream to butterscotch or brown.
Rehaut lumeMaterials
Luminous coating sometimes applied to the watch rehaut ring near the dial edge
Relume serviceMaterials
Professional restoration service applying new luminous material to vintage watch dials and hands
Rubber StrapMaterials
Durable elastomer material for watch bracelets, popular in diving and sport watches