I’m guessing 80s or so tonneau case but the day date window assuming that’s what it is seams to be pretty far inboard indicating a small movement. I don’t really know these at all im just trying to help a family member who’s had someone pass away.
Day / Date discs on Seiko movements can be smaller in diameter than the main dial. Possibly a caliber 7S26. All of the information will be on the caseback. If you can get better pics of the dial and outside of the caseback it would help.
Correction, looking at the position of the data/date again it has to be a small movement. How about a model 4206-0551. The caliber 4206 is only about 17/18mm did so a small ladies caliber. Here's one I found on eBay. https://www.ebay.com/itm/2561328110...=true&nordt=true&rt=nc&_trksid=p2047675.l2557Purchases made through these links may earn this site a commission from the eBay Partner Network