HOT ! Vintage Longines Ultra-chron Cal. 431 Automatic Watch Swiss Made Collectible

This is a Longines Ultra-Chron square case watch made in the 1960s and 70s. Cal.431 was used and is one of the two movements that remained until the final selection of the official watch used in the Apollo program. The movement has a specification of 10 vibrations per second and has passed tests such as temperature differences, making it suitable for a practical watch. This is a square case model, which is rare among Ultra-Chron watches. There is deterioration on the dial, but the case and back cover are in good condition. The case size is 30mm (1.18 inches) excluding the crown. The lug width is 19mm (0.75 inches). It comes with a leather stitched belt. The watch will run if shaken lightly, but the detailed daily difference has not been confirmed, so please purchase on the premise of maintenance.

I promise fast shipping via FedEx or DHL as soon as possible!