(1929) JAEGER-LECOUL­TRE CAL­I­BRE 101

Plaza Watch International - - The 50 Most Influential -

In 1929 this was the world’s small­est me­chan­i­cal move­ment, and it re­mains so to­day, as at­tested to by the Guin­ness Book of World Records. Women were set­ting the wrist­watch trend, and it was im­por­tant for a man­u­fac­turer to cre­ate wrist­watches with pur­pose- built cases and move­ments, with com­fort and light­ness be­ing key. This move­ment is 14mm in length, 4.8mm in width, and 3.4mm in height and com­prises 74 in­di­vid­ual com­po­nents and weighs only 0.9 grams; its tini­est com­po­nent weighs a mere 0.17 mil­ligrams. It re­mains largely un­changed to­day and is still used in some spe­cial edi­tion time­pieces. It be­came world-famo u s when Queen El­iz­a­beth II wore it at her coro­na­tion in 1953.

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