By A Mystery Man Writer
News - Patek Philippe donates an ornately decorated and ultra-complex perpetual calendar desk clock, the 27001M-001, to the Only Watch 2021 charity auction.
History is About to Be Made Again by Patek Philippe: The Patek Philippe Desk Clock for Only Watch 2021 - Collectability
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Patek Philippe Complicated Desk Clock 27001M-001 for Only Watch 2021
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Auctions: Nine Highlights From Only Watch 2021 - Hodinkee
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Only Watch 2021: Patek Philippe Complicated Desk Clock Ref. 27001M-001