Daytona reference
Rolex 6239
Underline
The first Daytona generation moved the tachymeter from the dial to an engraved metal bezel. Contrasting subdials, pump pushers and a manual-wind Valjoux-based movement established its signature layout. This catalog entry records dial: UnderlineA small printed line on some early 1960s Rolex dials. It is often discussed as a transition-period clue..
- Evidence
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