Caliber 1431 U based at Eta 2434 which is based at caliber 2430 but made to Eterna,s specification.
Movement no: 4834435.
Case ref: 444.
Case bo: 4717124.Complet serviced as usual.
Signed glass non signed crown which is normal to see Eterna info for other, less is more, models.
Non-brand strap and soft mint silvered textured dial
I placed some movement pictures because I love the as N.O.S. movements.