Reference:6234: Difference between revisions

[checked revision][checked revision]
Deep audit: ground 6234 chronology, production, movement, dial and auction claims
Finish chronology and movement wording after 6234 audit
Line 79: Line 79:
==Where it sits in the line==
==Where it sits in the line==


Two references frame the position. The 6034 (1949 to 1955) is the antimagnetic predecessor, running the same Valjoux 72 under the same smooth bezel in the same triple-register layout, on a different Oyster case construction. Sheldrake records it as the first Rolex Oyster chronograph built on a three-piece case rather than the monobloc construction of the 3525; the 6234 inherits that architecture and refines the dial layout. The 6238 (1961/62 to 1967/68) is the successor; the chronograph identity ported onto the 36mm Oyster case shared with the 6239, with the cal 72B carrying over from late-production 6234s into the first-series 6238 before the cal 722 redesign.
The 6034 precedes the 6234 in the Oyster chronograph sequence, and the 6238 follows it. The references share a three-register chronograph layout, but case construction, movement descriptions, and dial details vary between records. Some literature connects late 6234 Cal. 72B descriptions with early 6238 examples; the transition should be checked against the individual movement.


The 6234 predates the Cosmograph 6239. Sources generally place the Cosmograph designation with the 6239 in 1963 and the Daytona dial signature later; the 6234 itself has neither name.
The 6234 predates the Cosmograph 6239. Sources generally place the Cosmograph designation with the 6239 in 1963 and the Daytona dial signature later; the 6234 itself has neither name.
Line 98: Line 98:
The movement is a Valjoux 72-family, hand-wound, column-wheel chronograph with three registers. Auction and reference literature use Cal. 72, 72A, and 72B descriptions; late 6234 and early 6238 transitions are a catalogue and movement-marking question.
The movement is a Valjoux 72-family, hand-wound, column-wheel chronograph with three registers. Auction and reference literature use Cal. 72, 72A, and 72B descriptions; late 6234 and early 6238 transitions are a catalogue and movement-marking question.


The movement runs at 18,000 vph (2.5 Hz), 17 jewels, manual wind, no hack, no quickset. The frequency increase to 21,600 vph waited for cal 727 in 1970, four references downstream. Tom Mulraney's [https://www.watchtime.com/brands/watches/tracking-the-rolex-daytona-a-53-year-history ''Tracking the Rolex Daytona''] essay for WatchTime (2016) records a period retail of about USD 200 for a 6234, a price point that places the chronograph below the smaller-volume gold Pateks and Vacherons of the mid-1950s and roughly in line with the rest of the Rolex sport-watch catalogue.
The cited Valjoux 72 descriptions use an 18,000-vph frequency and manual winding. Jewel counts and ancillary features should be checked against the individual movement. A historical retail price is omitted here because it does not identify the reference’s construction or variant.


==Dial map==
==Dial map==