461 - ROLEX

ROLEX Oyster Chronograph Monoblocco Antimagnetic Ref. 4500 No. 418846 Circa 1946 Chronograph with 18K yellow gold (750) bracelet Case: round, manufactured by Spillmann (hammerhead hallmark No. 136), crown marked “Rolex Oyster,” round pushers, screw-down case back marked Dial: silvered with patina, “Swiss Made” inscription, applied hour markers, tachymeter and telemeter scales, painted minute track, gold sword-shaped hands, central seconds hand, 30-minute counter at 3 o’clock, small seconds at 9 o’clock, painted logo, signed Movement: manual-winding mechanical, caliber 23, signed Rolex with “ROW” engraving on the balance wheel bridge Strap/Clasp: leather strap with a plated pin buckle signed Rolex Diameter: 35 mm Gross weight: 53.5 g. Condition report provided for informational purposes only: At the time of catalog compilation, signs of normal wear, slight traces of polishing, partially burnished case, original crown, unrepainted dial with a slight, uniform speckled patina and light spots, dial with excellent readability, legible and only slightly worn hallmark on the lug, functional movement and chronograph, routine service recommended, no warranty The Rolex Oyster chronograph, reference 4500, was produced in the 1940s and is nicknamed “Monoblocco” due to its bezel integrated into the case. It was the brand’s first model to feature its waterproof Oyster case, invented in 1926. This reference was available in steel, yellow gold, and rose gold.