∑
353. Patek Philippe
A fine and rare platinum limited edition
perpetual calendar wristwatch with silinvar
escape wheel, spiromax balance spring,
original certificate, additional case back and
fitted presentation box
百達翡麗，精細及罕有，鉑金自動上弦腕錶，配萬年
曆、矽製擒縱齒輪及矽製游絲擺輪，型號5550，限量生
產，附證書、底蓋及盒子，約2012年製
Manufacturer
Year
Reference No.
Movement No.
Case No.
Model Name
Patek Philippe
Circa 2012
5550
5’627’385
4’597’339
Advanced
Research
Material
Platinum
Calibre
Automatic,
240, 25 jewels
Bracelet/Strap Dark brown
Patek Philippe
crocodile
leather strap
Clasp/Buckle
Dimensions
Signed
Platinum Patek
Philippe folding
deployant clasp
37 mm.
diameter
Case, dial and
movement
signed
Estimate
HKD 600,000-800,000
USD75,000-100,000
HK WATCHES_NOV15_420-575_bl_CS5.indd 546
Accessories
With Patek Philippe Certificate of Origin,
additional case back, setting pin, sales tag,
fitted presentation box and outer packaging.
Patek Philippe created the “Advanced
Research” series to explore new
developments, components, and
materials for the company’s time
pieces. The research culminated in the
development of Ref. 5250, 5350, 5450,
and finally, the present Ref. 5550.
The present watch is offered in
like new condition, and is part of a
limited edition of 300 pieces only.
First showcased at Baselworld in 2011,
reference 5550 is a perpetual calendar
that utilizes all of the company’s previous
silicon developments. It is important to
note that its predecessors are all annual
calendars. The watch houses a modified
cal. 240 QP, which features a Pulsomax
escape wh