18k yellow gold Watch no. -

Case: s/n; 10,026 Dial: Patek Philippe & Co., Geneve Movement: s/n; 860,163, Caliber 17-140 straight line lever escapement, Eighteen 18 jewels, Eight 8 adjustments, 2 Poincon de Geneve seals. Provenance: 1932 - Niton, Geneve (Case by Niton, but also ebauche and/or finished movement by Niton, Patek Philippe?) 1937 - Patek Philippe, Geneve 2013 - Patek Philippe Museum Catalogues, Volume II, page 115, Inv. P-105 Dress Watch, Patek Philippe, Genève Open-faced, stem winding and setting Yellow gold case, No. 10 026 silvered dial, applied gold baton indexes, subsidiary seconds dial at 6 o’clock Gold Feuille hands; gold seconds hand Movement No. 860 163, calibre 17-140, straight line lever escapement 1937 Inv. P-105 H. 54 mm / ∅ 43.5 mm / thickness 7.1 mm. This watch was never sold. The case, made by Niton, features pounced and chased enamelled roses and foliage, with a griffon within a cartouche, and flux finishing. The back of the watch and movement are shown in the book Patek Philippe, Geneve by Martin Huber & Alan Banbery, 1982. On page 167, picture 126 shows the emaile back of the watch. On page 164, picture 116c shows the same movement but with movement serial number 891 857. Interesting is that this movement carries 2 Poincon de Geneve quality seals.