BREGUET Type 20 5101/54 rare aviation- chronograph of the French army, Switzerland 1954, manual winding, screwed down steel case, rotating fluted-bezel, original winding crown, case back signed: 'BREGUET-TYPE 20-FG 5.56-5101/54', additional 9 more service-marks (Fin Garantie) from 1963 - 1982, probably performed from the formerly shop Péchoin in Paris, case-number 7160 P, black dial, luminous numerals & hands, nickel plated movement calibre Valjoux 222 with Fly Back, 17 jewels, glucydur-screw balance with Breguet- hairspring, diameter approx. 38 mm, condition 2-3