Jaeger-LeCoultre's 'Reverso' watch emerged at the height of Art Deco in 1931 and has since become a cultural icon. Assouline's hardcover book depicts the journey from its polo player roots up to present day - and through over 50 calibres and several hundred dials. Catalogued with full-bleed archival images by horological specialist Mr Nicholas Foulkes, essays document the maison's history, with contributions from more than a dozen owners who've personalised their timepieces in remarkable ways.