Welcome. There won't be a model name associated with this watch - there rarely is with women's watches - but I believe your dating is correct. The radially fluted bezel is a fairly frequent UG design element from that period, which is around the time the Polerouter model line was introduced.
The numerical reference is engraved on the back: 45538/1. The other number is the case number. Absent finding it in a catalog, you are not likely get much more model information than that.
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