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Introducing the US$7500, In-House, Automatic Perpetual Calendar from Frederique Constant | SJX Watches
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The World's Most Affordable Automatic Perpetual Calendar Watch: Frederique Constant Highlife - YouTube
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Hands-on review - Frederique Constant Manufacture Perpetual Calendar, a QP priced under €8,000 (Live photos) - Monochrome Watches
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