Portal:Anniversaries/January 21

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2013A. Lange & Söhne introduces the 1815 Rattrapante Perpetual Calendar at SIHH; it would win both the Grande Complication Prize and Public Prize at the Grand Prix d'Horlogerie de Genève later that year
2013Omega announces Cal. 8508, the first watch movement anti-magnetic to 1.5 Tesla (15,000 gauss).