LONGINES so called Hour Angle Watch, Switzerland around...

LONGINES so called Hour Angle Watch, Switzerland around 1994, self winding, reference 628.5240, stainless steel case with hinge case back including original bracelet, glazed glazed back, bezel bidirectional revolving, dial middle part revolving by winding crown, calibre L 628.1, 21 jewels, precision adjustment, balance-stop at hands setting, diameter approx. 38 mm, length approx. 21 cm, original box & papers, condition 2