Patek Philippe. A very fine platinum rectangular wristwatch with diamond numerals and a platinum mesh bracelet

Patek Philippe. A very fine platinum rectangular wristwatch with diamond numerals and a platinum mesh bracelet
Reference: 425
Date: 1948
Movement: 18-jewel Cal. 9"' – 90 manual winding, screwed monometallic balance, flat spring, micrometer regulator, No. 970845
Dial: Silvered, baguette and circular-cut diamond numerals, subsidiary seconds, platinum hands
Case: Brushed and polished rectangular with faceted crystal, snap back, engraved with initials W. M. K.
Strap/Bracelet: Contemporary platinum mesh with deployant clasp
Signed: Case, dial and movement
Size: 20 x 34.5mm
Accompaniments: With an Extract from the Patek Philippe archives confirming the manufacture of the watch in 1948 and its sale April 13, 1949.