Rolex. An unusual stainless steel automatic bubble back wristwatch with black dial and bracelet

Rolex. An unusual stainless steel automatic bubble back wristwatch with black dial and bracelet
Signed Rolex, Oyster Perpetual, retailed by Serpico y Laino, ref. 2764, case no. 184'065, manufactured in 1941
Cal. 9 3/4''' nickel-finished lever movement, 17 jewels, rotor engraved Rolex Auto Rotor, Swiss Made, Patented, Super Balance, black dial, luminous Arabic and dot numerals, luminous hands, subsidiary seconds, tonneau-shaped water-resistant bubble back type case, screw back, screw down crown, stainless steel expandable bracelet, stainless steel deployant clasp signed Rolex, case and movement signed by maker, dial signed by maker and retailer
33 mm. diam.