Longines Avigation Hack Watch

About this reference

The Longines Avigation Hack Watch Type A-7 (Reference L2.779.4.53.0) was introduced in 2012 and remained in production for approximately five years before being replaced by smaller iterations. Collectors value this specific reference for its 49mm stainless steel case and its 40-degree angled dial, a design originally intended to allow pilots to read the time without releasing flight controls. It features the Caliber L788.2, a column-wheel monopusher chronograph movement developed by ETA exclusively for Longines. The dial is characterized by large white Arabic numerals and a tachymeter scale on the outer rim. On the secondary market, this reference typically trades between $2,500 and $3,800 depending on condition and the inclusion of original documentation. A notable production detail is that this 49mm version is the most faithful modern dimensional recreation of the original 1930s Type A-7 flight chronographs commissioned by the U.S. Army Air Corps.