Longines Ultra-Chron, Ref. 7951-2, Cal. 431, Men’s Automatic Vintage Watch Nivada The 33 mm gold-plated case

The 33 mm gold-plated case features a flat polished bezel and brushed surfaces on the lugs

The movement has a warm gold-tone finish and a large signed rotor marked Damas

and a hand-wound mechanical movement

This watch is in excellent working order

Longines Ultra-Chron, Ref. 7951-2, Cal. 431, Men’s Automatic Vintage Watch Nivada The 33 mm gold-plated caseVintage Longines Ultra Chron Dress Vintage Watch from 1961 featuring the high frequency Caliber 431 automatic movement and elegant crosshair dial, a timeless Swiss collectible for sale. Longines Ultra Chron 1961 First impression 7951 2 The Longines Ultra Chron reference 7951 2 from 1961 represents a milestone in Swiss horology as one of the earliest mass produced high beat wristwatches. Its 37 mm stainless steel case houses the legendary Caliber 431