Vintage Seikosha (today's Seiko) watch from around the 1930s-1940s period. The tonneau shaped case is heavily oxidized, and the crystal is cracked. However the porcelain enamel dial (see photos) is in beautiful condition for its age.
This case shape was quite common in wartime Seiko pieces as well. Movement not working, recommended for collection, spare parts, otherwise would need overhaul.