The Breguet Type XX is the flyback pilot’s chronograph the brand produced from 1954 to meet a French military standard. In 1952 the French Air Force defined “Type XX” as a specification rather than a model name: a flyback chronograph with subdials at 3 and 9 o’clock, a black dial with legible luminous Arabic numerals, a 38mm screw-back case, a bidirectional rotating bezel and accuracy within eight seconds a day. A circa 1954 example offered by Phillips has a 38mm stainless steel case, a matte black dial and the manual-wind Valjoux calibre 222 with 17 jewels, beating at 18,000 vibrations per hour. The flyback function lets a pilot reset and restart the chronograph with a single push, which was vital for timing successive flight legs. It matters because it became the best known of all the French military chronographs and defined the look of the pilot’s chronograph.

Several firms supplied watches to the Type XX standard, but Breguet‘s stood out for accuracy and durability. Military dials carried no brand name; the maker’s name appears on the caseback, engraved “Type 20” with an issue number. Many casebacks also show “FG” engravings, for “Fin de Garantie”, added by watchmakers to record when the next service was due. Deliveries to the French Air Force ran in the mid and late 1950s, and in January 1960 about 500 pieces of the Type XX No. 4100, nicknamed “Aéronavale”, went to the French Naval Air Service with a 15-minute counter matched to the pre-flight check. Breguet also sold civilian versions, and the 1995 Aéronavale reference 3800 revived the design with the automatic calibre 582 in a 39mm coin-edge case.

Collectors see the military Type XX as the archetypal French pilot’s chronograph, valued for its documented service history and the patina of its luminous dials. Prices remain accessible compared with Swiss military pieces of similar fame: Phillips estimated a circa 1954 example at $12,000 to $18,000, and Antiquorum sold a 1954 piece for CHF 6,875 in 2011, while pieces with certificates confirming sale to the French Air Ministry draw a premium. The 1990s Aéronavale and Transatlantique revivals were a worldwide hit, and enthusiasts regretted their later disappearance from the catalogue. The 1954 military Type XX is no longer produced; Breguet continues the line with the Type 20 Chronographe 2057 and Type XX Chronographe 2067 introduced in 2023.