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The smallest movement in the world was made in 1929?! It was called the Jaeger-LeCoultre Caliber 101 - The Watch Hand
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Christiaan van der Klaaw Planetarium - With the World's Smallest Mechanical Planetarium - Monochrome Watches
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Jaeger-LeCoultre launches two High Jewellery watches with Calibre 101, the world's smallest mechanical movement
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