Patek Philippe 1578R Calatrava Watch circa 1948

Introduction:
This 1578R Patek Philippe vintage Calatrava watch features a 35 mm in diameter 18K rose gold case with a black dial and spider lugs.  The watch is fitted with a 27 SC sweep center hand movement #961879, and case #646756. 

Date & Paperwork: 
The watch was made in 1948, confirmed with an extract from the archives confirming its date of manufacture and further sale.  Additionally, the watch comes with a one year movement guarantee.

Essay: 
Reference 1578 was launched in 1943 and produced until approximately from 1965, available in yellow and pink gold and with either subsidiary seconds or sweep center seconds. It is distinguished by its "spider" lugs similar to chronograph reference 1579.