Introduction:
This Patek Philippe 2551J "Disco Volante" automatic Calatrava is made in 18K yellow gold. The watch measures 36mm in diameter, powered with an 12-600 caliber automatic movement, #755005 / #2605323. The watch is further accompanied with an after market generic strap and buckle.  This example has a silvered white dial and raised gold indexes.

Date & Paperwork: 
The watch was made in 1957.  The watch is further accompanied with an extract from the archives, confirming its date of manufacture and further.  Additionally, the watch comes with a one year movement guarantee.

Essay: 
Initially introduced in 1954, the Patek Philippe reference 2551 is powered by the self-winding caliber 12-600AT. The reference was introduced in four case materials with the production discontinued in 1960. The present example from circa 1955 is a 1st series, with factory dial. The case was made by A. Wenger. It is believed that approximately 1,100 pieces were encased in its production span of 7 years. approximately 150 pieces per year.

Specifications: 
Reference Number: 2551J
Year Manufactured: 1957
Movement: Automatic
Case Diameter: 36mm
Case Thickness: 11mm