This is an excellent Patek Philippe Vintage Calatrava 3445

Very rare Model
 
Thanks to its silver dial and white-gold case with recessed crown, this watch is supremely elegant. Beyond its looks, this Patek reference 3445 is also powered by the caliber 27-460 M automatic movement with date function – making it both stunning and practical.
Made in Switzerland
Circa 1970
Movement serial number 1230516
18k white gold with 18k white gold buckle
Very beautiful collectors piece.
Iconic and very elegant gentlemen's Patek Philippe
Fine automatic caliber 27-460 with solid gold 24k rotor
36 Jewels
This crocodile leather band and watch will fit 19.5cm wrist
35mm excluding crown
Mineral Crystal
Original Silver Color Patek Philippe Dial Made of Solid 18k Gold
SIGNED PATEK PHILIPPE, GENEVE, 
This watch functions precisely
It is original and will become a perfect collectible treasure