No. 591 / Longines Ultra-Chron - 1971

LonginesUltra-ChronRare Grey Crosshair Dial / 1971 Intro This Longines Ultra-Chron from 1971 features a stunning grey crosshair dial in mint condition. This is truly a beautiful piece that any watch collector can appreciate. Story The Longines Ultra-Chron is a watch that ticks all the boxes that we require of a proper vintage dress piece. Introduced in the late 1960s and produced for only six years, the Ultra-Chron is an early attempt by the brand to mass-produce a mechanical watch that, according to their advertisements, was "the world's most accurate watch... guaranteed accurate to within one minute per month." This was achieved with the hi-beat Caliber movement, which had a beat rate of 36,000 beats per hour. Detail MODEL Ultra-ChronREFERENCE8317 5YEAR1971SERIAL16011225CASE35mm (excl. crown), Stainless SteelMOVEMENTAutomatic, Cal. 431 (51043645)LUG19mmCOMES WITHWatch with new leather strap Condition OVERALL A RankCASE Great ConditionCRYSTAL Great ConditionDIAL Gr