Lot Essay
Both the Centrograph and the Zerograph are instruments of very high precision to calculate intermediary consecutive times.
Details
ROLEX. A VERY RARE STAINLESS STEEL SINGLE-BUTTON CHRONOGRAPH WRISTWATCH
signed Rolex Oyster, Centregraph, circa 1938
with a nickel-finished lever movement, 18 jewels, bi-metallic compensation balance, the silvered matt dial with Arabic numerals, outer ring calibrated for tachometer, tonneau water-resistant-type case with graduated revolving bezel calibrated for 60 minutes, single-button chronograph, together with a stainless steel later Rolex bracelet, case and dial signed- 32mm diam.
signed Rolex Oyster, Centregraph, circa 1938
with a nickel-finished lever movement, 18 jewels, bi-metallic compensation balance, the silvered matt dial with Arabic numerals, outer ring calibrated for tachometer, tonneau water-resistant-type case with graduated revolving bezel calibrated for 60 minutes, single-button chronograph, together with a stainless steel later Rolex bracelet, case and dial signed- 32mm diam.
Literature
A similar watch is illustrated in "Orologi Rolex" and in "Il Cronografo", page 77