This 1954 Rolex Oyster-Perpetual semi-bubbleback ref. 6532 (between the lugs) houses the caliber 1030 movement, which was just cleaned, overhauled, and is quite accurate. The 33mm stainless steel cases on these watches are uncommon, having flat sides as opposed to rounded. This ref. 6532 is also found on the Rolex Deep-Sea. It is very common to find a different reference on the case back such as this. Rolex often used case backs they had on hand from the same year as the watch was produced. The original dial on this watch is the more uncommon bullseye style, which was recently revived by Rolex and is shown in their new line of datejust and Air-King watches. This original dial is two-tone with raised steel markers and matching Dauphine hands. The shimmering stainless steel, original Rolex Oyster ref. 6532 case with 1954 date code measures 33mm and is in great shape overall.