Swis made?
Not sure, I don’t know this reference well enough. There isn’t much online either. Seems to be OT 2650. The Swiss issue is definitely a strange one, so unless it’s ultra cheap, wait for other opinions.
Also the pictures look very yellowish. I don’t like this lighting. Worth asking for better lit pictures in natural light. It’s difficult to assess the patina like this.
Dial and hands both appear to be correct and original. Very difficult to refinish dials like this because of the way the dimple minute track is produced, oxidation on the gold figures points to old as well.
regarding sellers saying "original dial" -- many say that to mean just that, the physical dial is original. Sometimes, this is couched speak for " ... yes but it's been repainted"