Rolex. An unusual stainless steel automatic bubble back wristwatch with sweep centre seconds, black dial and bracelet

Rolex. An unusual stainless steel automatic bubble back wristwatch with sweep centre seconds, black dial and bracelet
Signed Rolex, Oyster Perpetual, Chronomètre, ref. 3372, case no. 252'444, manufactured in 1943
Cal. 9 3/4''' nickel-finished lever movement, 17 jewels, rotor engraved Rolex Perpetual, Chronometer, Swiss Made, Patented, Super Balance, black dial, luminous Arabic and baton numerals, luminous hands, outer minute divisions, sweep centre seconds, tonneau-shaped water-resistant bubble back type case, chased hour markers to the engine-turned bezel, screw back, screw down crown, stainless steel bamboo-style bracelet, stainless steel deployant clasp signed Rolex, case, dial and movement signed
33 mm. diam.