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Patek Philippe · jewelry · Only live offer currently seen

Beta 21

18k yellow gold · Crystal · Unknown · Excellent

$20,880known price

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WatchesOfSwitzerland
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On the source for 1 yearOriginally listed by the merchant 1 year ago · Jul 20, 2025
Only live offer for this itemAcross the resale sources in Wishlisted’s latest catalog snapshot. Availability can change quickly.
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Description & details

Description from WatchesOfSwitzerland

WHY WE LOVE IT – The 1969 introduction of the Seiko Astron, the world’s first commercially available quartz wristwatch, sent tremors throughout the industry. In a struggle to keep pace with the new technology, the big Swiss watch manufacturers banded together to develop their own quartz movement, which could be used by watches from the different brands. The resulting production movement, the Beta 21, was an electronic caliber featuring a quartz crystal beating at 8.192 Hz. Reduced to 256 Hz to drive a vibration motor, the movement featured a sweep seconds hand, rather than the more well known “ticking” seconds of conventional quartz calibers. Despite the massive R&D budgets of the Swiss conglomerate that developed the Beta 21, just 6,000 movements were produced before the project was scrapped. Certain watchmakers, however, produced their own versions of the Beta 21 and continued production for some time. Some of the more significant Beta 21-based models were those produced by none other than Patek Philippe, a manufacturer well known for its mechanical calibers. The example that we have here, a Reference 3587, dates to circa the early 1970s and features a 43mm 18K yellow gold case with a signed crown, a sunburst champagne dial with applied indices, a matching handset, and a framed date window at 3:00. Powered by the Beta 21 electronic quartz movement, it comes paired to a stunning yellow gold mesh bracelet with 'Morellis' finishing and a signed crown. Whether you’re a dedicate

Original listing details

WatchesOfSwitzerland source reference
WatchesOfSwitzerland-40930198
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Price details
Listing price$20,880
Known shippingNot listed / included
Estimated tax & dutiesConfirmed at merchant
Marketplace feesNone shown
Known price before checkout$20,880
Displayed in USD using the latest cached daily reference rate. Final merchant checkout controls currency conversion, taxes, duties, availability, and the purchase total.
Condition, timing & store policies
StoreWatchesOfSwitzerland
ConditionExcellent
Original listing dateJul 20, 2025
First seen by WishlistedSep 19, 2026
AccessoriesSee merchant listing
Store authenticationHandled under WatchesOfSwitzerland's policy; confirm item eligibility
ReturnsConfirm with merchant
Catalog freshnessChecked 3 hr ago
Seller locationSeller location not supplied

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