Editorial
The Reverso is the most-imitated dress watch shape of the 20th century, designed in 1931 to survive polo (the case rotates to hide the crystal during a chukka), produced ever since. The current 'Reverso Classic Monoface' is the small-seconds, hand-wind, 45.6×27.4mm steel-cased rectangular reference: the cleanest expression of the original design.
Designed by Jaeger-LeCoultre engineer René-Alfred Chauvot in 1931 for the British Army in India. JLC has produced the Reverso continuously since with movement upgrades in every generation; the current Classic Monoface uses the hand-wind caliber 822, a slim, robust dress movement with sub-seconds. Variations include duoface (two timezones), tribute editions, and limited-edition enameled and skeletonized variants; the unadorned Classic Monoface is the canonical buy.
Common things to check: case-back personalization (Reversos are commonly engraved as gifts, verify any engraving is original to the watch); strap (JLC's signature alligator strap with branded buckle is part of the experience; an original strap + buckle is a value lift); case-rotation mechanism (the slide-and-rotate action should be smooth and definitive, any grinding or hesitation is a service flag); dial originality (JLC dials are heavily service-replaced, look for crisp printing of the 'Jaeger-LeCoultre' wordmark).