- Wrist Chronometer no.

Case: - Dial: - Movement: s/n; 860392, caliber baguette 7 ligne, 18 jewels, Poincon de Geneva quality seal, Patek Philippe & Co., Geneve, Swiss, Eigtheen 18 jewels. All adj Provenance: 1937 - Niton, Geneva (still validating) 1937 - Patek Philippe, Geneva 1988 - book Patek Philippe, Geneve by Martin Huber & Alan Banbery (1988), page 32, No.23, Same caliber as movement serial number; 6214 or 3443, 18 jewels, bimetallic balance, flat hairspring. This baguette Caliber 7 ligne was used by Patek Philippe for the ladies Reverso Ref. 106 wristwatch. This ebauche is known as by Niton, not by LeCoultre.