Tudor made a smaller version of their submariner that looks great on smaller wrists. I don't think they ever made a no date mini sub, but it's worth checking out. You should also look into the tudor black bay 36. 36 mm case, only downside is it doesn't have a dive bezel

Tudor is a Rolex sub brand that uses Rolex cases but swaps in more generic swiss movements. Less expensive servicing, especially since you don't need to send it to rolex, but all the Rolex quality on the outside.