Longines - Monopusher Lot n° 346

An elegant, rare vintage monopusher pilot's chronograph with the first chronograph calibre ever made, Longines calibre 13.33Z Movm. No. 4679704, Cal. 13.33Z, Case No. 4679704, Dimensions 36 mm, circa 1927, Origin Schweiz, Original box Case: Silver, push back with hinge. Dial: Enamel, miniature hairline crack in the minute counter. Movm.: Manual. This is a single-pusher chronograph equipped with the first chronograph calibre ever, the 13.33Z developed in 1913. The crown is used for winding the watch and served as a pusher for the chronograph. Time can be set by pulling out the crown, which was not possible with the earlier single-pusher chronographs, calibre 13.33Z. Case: very good. Dial: very good. Movm.: very good, capable of running, cleaning recommended.