Please help me to identify my grandfather's watch. I inherited it in 1976, when my grandfather died, but at the time I was 7, so not supposed to wear such a watch. Later I got a quartz and almost forgot this watch. It remained in a drawer, unused and not serviced. I found it recently, and to my great surprise as soon as I wound it, it started and is more accurate than my new Seiko 5.
I'll bring it to the watchmaker for service and repair, the date doesn't work and the dial moves when I wind it.
The inscriptions on the dial are:
and on the back
stainless steel back - waterproof - antimagnetic
I've never heard this (French?) Zeus brand.