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Ralph Knoll about the Stop-seconds mechanism for a Tourbillon – A. Lange & Söhne

A. Lange & SöhneWatches & accessoriesWatch on YouTube

May 14, 2013 · 2.9K views

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Format: Documentary
Category: Watches
Houses: A. Lange & Söhne
People: Ralph KnollArtisan
Products & items: watch

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