Here is a vintage mid-size (31mm.) two-tone gold and steel Rolex Oyster Perpetual dating to 1977. The entire watch is original and displays excellent overall condition after the ROLEX automatic winding cal. 2030 28 jewel movement was just cleaned and is accurately keeping time. The smaller mid-size ROLEX is a men’s watch, for those who like the more discreet appearance of a demure sized watch. These ROLEX are also chosen by many ladies to wear, as they are larger than the ladies ROLEX from the same era.