In 1955 Rolex introduced a maual-wind chronograph in an Oyster case, which can be considered a precursor of the Daytona timepiece. Rolex produced about 2300 stainless steel pieces and less than 150 14K or 18K gold in a variety of black and white dials.
The Rolex Daytona Ref.6234 was the first Rolex Oyster chronograph. This timepiece was produced from 1955 to 1961, and featured three sub dials (seconds at 9 o’clock, 30 minutes and 12 hours counters respectively at 3 and 6 0’clock). In addition, it contains a tachometer scale on the outer ring and a telemeter scale for distances on the inner ring.