A GOLD OPENFACE SPLIT CHRONOGRAPH

Details
A GOLD OPENFACE SPLIT CHRONOGRAPH
PATEK PHILIPPE & CO., GENÈVE, NO. 197804

The 28-jewel nickel finished keyless lever movement with chronograph work visible on train and barrel bridges, activated by button on band, 18K gold cuvette, silvered dial with subsidiary seconds, 30-minute register, arabic numerals and blued-steel hands, within an plain 18K gold case, signed on case, movement, and dial, c. 1925--46mm. diam.