A Rare Stainless Steel Chronograph Wristwatch with Register, Telemeter, Tachometer and Bracelet, Rolex, Oyster Chronographe, Anti-Magnétique, Ref. 4500, Circa 1946

nickel lever movement, 17 jewels, monometallic compensation balance, precision regulator, pink matte dial, applied Arabic and dagger numerals, two engine-turned subsidiary dials indicating constant seconds and 30 minute register, inner ring calibrated for telemeter, outer ring calibrated for tachometer, tonneau water-resistant-type case with raised bezel, two round chronograph buttons in the band, screw back and screw-down crown, case, dial and movement signed, with stainless steel expandable Rolex Oyster bracelet and deployant clasp.

For a similar example of this model, Ref. 4500, see Gobbi, I Cronografi Rolex - La Leggenda, pp. 218-219.