Les Historique Chronographe Ref. 47101/000J-4 Vacheron Constantin's box and papers, 1992

Manual-winding mechanical movement, 1140 caliber,  21 jewels, based upon a thoroughly re-worked ‘Nouvelle Lemania’ 2310. The movement is beautifully finished, with exquisite chamfering on all angles, polishing and decoration, in the form of Geneva striping. The movement uses a straight-line lever escapement, a monometallic balance adjusted to 5 positions, self-compensating Breguet spring and swan-neck micrometer regulator. Polished finish yellow gold round-shaped case, 36 mm diameter.  Snap-on, display case-back, features the Maltese cross and manufacturer's hallmarks. Silvered dial with applied Arabic and baton numerals. The two sub-dials, at three and nine o'clock, are the thirty-minute and sub-seconds registers, respectively. Five-minute divisions and tachymetre scale in the outer rim. Sapphire crystal. Original leather strap with yellow gold original pin-buckle.