FHF 90.5-420, Crown Wheel

FHF original part from a NOS movement. Fits cal: 90.4, 90.5, 90.8, 90.9, 905, 908, 909 Technical data: 90-5 17/25 jewels, Automatic wind, center second, date, quickset. Size: 11.5''' 25.6 mm. H: = 5.4 mm. N: = 18.000 A/h. Power reserve: 43 h. Versions: 90-4: date. 90-5: date. 90-9: day, date. 905: minor modifications, date. 908: minor modifications, day, date.