Non-Oyster Case

Early Chronographs (pre-Daytona) Jean-Claude Killy 4768 — Non-Oyster Case

Undated

Triple-calendar chronograph in a conventional, non-Oyster case.

Identifying details

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Variant	Production
Non-Oyster CaseCurrent	Undated

Unknown attributes are left out rather than guessed.

Valjoux 72C

Triple-calendar version of the Valjoux 72: day and month in windows below twelve and a central pointer date. Used in every Rolex Dato-Compax.

Manual winding · 18,000 vph · 17 jewels · 48 h reserve

Variant

Production

Undated

Movement

Valjoux 72C

Triple-calendar version of the Valjoux 72: day and month in windows below twelve and a central pointer date. Used in every Rolex Dato-Compax.

Manual winding · 18,000 vph · 17 jewels · 48 h reserve