LONGINES Ref. 66.13.01P Steel wrist chronograph. Barrel case, screw-down back, signed. Blue dial, applied hour-markers, 2 sub-counters, 45-minute totalizer, small seconds, date window, tachometer, signed. Valjoux 7734 mechanical movement, Incabloc shock-resistant system. Diameter 41 mm With period case. Movement operational at the time of writing. H.S. chronograph function (reset to zero malfunction). Some signs of use. A few scratches on the back, well preserved. Overhaul to be expected. Please note that all watches are sold as is. No guarantee of working order. Most watches have been opened to identify movement type and quality, including water resistant watches. The purchaser is advised to consult a watchmaker to review the water-resistance of the watch. Indications of the existence of a restoration, an accident or the state of preservation remain subject to the purchaser's personal judgement. The absence of any indication of replacement parts, restoration or accident in no way implies that an item is free of all present defects. All items shown may have been previously serviced and may contain non-original parts. The dimensions and weights of the items are approximate. Expert : ADER WATCHES assisted by Justine LAMARRE