Patek Philippe Ref. 2552 18ct-yellow-gold
Patek Philippe, Genf
silver-plated dial with setted gold-indexes
Movement: Automatic Cal. 12.600 AT, 30 rubies
Diameter of case: ca. 36mm
with Original Certificate of Patek Philippe
This is the first Patek Philippe automatic movement, of which 7100 were made.
These were built into different modules (References). It is considered by collectors
to be one of the most beautiful automatic movements ever built!