Oyster Perpetual Bubbleback 2764 — Two-Tone Copper Radium Dial

Two-tone champagne dial that has turned a copper colour from the radiumRadiumA radioactive element historically used in luminous paint on watch dials and hands. Its use belongs to the history of luminous materials, rather than a particular dial colour. on indexes and hands; 9 3/4''' movementMovementThe working mechanism inside a watch or clock. with 17 jewelsJewelA natural or synthetic stone used as a bearing or endstone for a movement pivot..