Vintage Rare Lucerne Marine Luxus Diver Calendar One Jewel EB 8810 Swiss Watch. It has some wears and scratches.
It is a nice shape for that age. The case has been washed and ready to wear. The movement runs and sets time. Let me know if you have any questions. Diameter: 36mm without crown, 40mm with crown, 45mm lug to lug.
Dials: black and white markers.