rolex sky dweller Rolex: Model: Day Date: Ref. No. 18238: Serial No. L410xxx: Year: 1989: Gender: Gents: Case Size: 36mm: Case: Excellent 18K case that shows only very light wear from age. The lugs are straight and even with sharp edges and clear case numbers. The fluted bezel is equally crisp and free of any major wear: Bracelet / Strap Subscribe