Patek Philippe
1970 Ellipse Ref. 3587 Cal. Beta 21 18kt Y/g

Patek Philippe
1970 Ellipse Ref. 3587 Cal. Beta 21 18kt Y/g
Rif: AF00186
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Patek Philippe Ellipse ref.3587 Beta 21 in 18kt Y/G, with Lugs. Very few pieces were made with lugs. The most common version of Patek’s Beta 21 has a fixed bracelet and also removable bracelets are rare. This model with lugs are beyond rare...
Two piece cushion shaped 18k yellow gold case measures 42mm, 43mm wide, 11.8mm thickness. Lug to lug an impressive 50.5mm. The case features a stepped bezel, sapphire crystal screw down back case.
Original untouched two-tone gold dial with applied hour markers with inlaid black enamel, date window at 3 o’clock framed in gold, original gold baton hands and center sweep seconds hand.
Fitted on a Patek alligator strap and original signed tang buckle.

Powered by the Beta 21 electronic caliber. The movement features a quartz crystal and interestingly, while the natural oscillation rate of the quartz crystal is 8192 Hz, Patek reduced the oscillation rate to 256 Hz by means of a proprietary frequency reducer. The seconds hand sweeps (versus the usual ticking of quartz regulated movements), and the caliber has 13 jewels. A date is
The Beta 21 movement was the fruit of a collaborative effort, named the Centre Electronique Horloger, which got underway in 1962 and was sponsored by over 20 leading Swiss watch brands. The prototype movement debuted in 1967. In 1968, a consortium of Swiss manufacturers pooled their resources and manufacturing capabilities to mass produce the calibers. The first watches containing the Beta 21 movement arrived on the market in 1970/71.
The watch is in overall well preserved condition and comes with
the Patek extract of archive.




TypeOnly Time,
Year1970
Condition3.Very Good
Reference3587
CaliberBETA 21
MovementElectromechanical
MaterialYellow Gold
DialOro
BraceletCrocodile

Warning
All our watches come with what is shown in pictures unless stated in advertising.
Service history on the watch is not known unless stated in ad.
Watches are checked for timing and proper working condition.
Watches are preowned so may have very minor wear unless stated in ad.

Warranty
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