Patek Philippe. An 18K gold waterproof chronograph wristwatch

Patek Philippe. An 18K gold waterproof chronograph wristwatch
Signed Patek Philippe & Co., Genve, No. 867247, circa 1946
13''', with nickel-finished lever movement, 23 jewels, bimetallic compensation balance, micrometer regulator, the silvered matt dial with applied baton and Roman numerals, outer tachymetric scale, two subsidiary dials indicating constant seconds and 30 minutes register, the circular water-resistant-type case with screw back (Ref. 1463), two round chronograph buttons in the band, case, dial and movement signed
35 mm. diam.